How I Beat a Fake Chargeback Claim Against My NZ Business | BankCert

The dispute that nearly cost me $3,400 — and what I did about it

Somewhere around 9am on a Tuesday in February 2026, I opened my email to find a chargeback notification from my payment processor. A customer — I’ll call her “R.M.” — had disputed a $3,400 transaction for graphic design services I’d completed, delivered, and invoiced three months earlier. Her claimed reason: services not received. The money had already been pulled from my account. I had 10 days to respond.

A fake chargeback claim — sometimes called friendly fraud — is when a customer disputes a legitimate transaction with their card issuer in bad faith, knowing full well they received the goods or services. According to the Chargebacks911 2024 Merchant Report, friendly fraud now accounts for roughly 75% of all chargeback disputes in digital and service-based industries. That number should make every small business owner deeply uncomfortable. It made me furious.

Here’s what I found out when I dug into it — and how I won.

What is a chargeback, and why is the system so badly skewed against merchants?

A chargeback is the reversal of a card transaction, initiated by the cardholder through their issuing bank. On paper, it’s a consumer protection mechanism. In practice, for small businesses operating in New Zealand and elsewhere, it often functions as an invitation to fraud.

Chargeback: A formal dispute mechanism that allows a cardholder to request their bank reverse a payment directly from the merchant’s account, bypassing the merchant entirely. The burden of proof — in most cases — falls on the merchant to disprove the claim.

The fundamental problem is architectural. When a chargeback is filed, the issuing bank almost always sides with the cardholder first. The funds leave your account before you’ve had a single chance to speak. You’re guilty until proven innocent. Which, strictly speaking, isn’t how consumer protection is supposed to work — but that’s the reality card networks like Visa and Mastercard have built, and New Zealand merchants operate under the same global ruleset as everyone else.

According to the Reserve Bank of Australia’s Payments System Review — which closely tracks trends affecting NZ given the integrated trans-Tasman financial system — digital service disputes have risen sharply since 2022, with no equivalent rise in merchant protection rights. The Financial Dispute Resolution Service (FDRS) in New Zealand handles consumer-facing complaints but offers merchants far less structured recourse.

How I investigated the claim — and what I found

My first instinct was to call the customer. Don’t do that. Your payment processor will likely advise against it too — any contact can be construed as harassment, and it muddies the evidentiary record. Instead, I went cold and systematic.

The investigation took about four days. Here’s exactly how it unfolded, step by step.

1. Pull every piece of communication. I exported every email thread, every invoice, every Slack message, and every file delivery notification into a single folder. R.M. had responded positively to the final deliverable on 14 November 2025 — in writing. That email would become the centrepiece of my rebuttal.
2. Screenshot the delivery receipts. I used a cloud file-sharing platform (Dropbox) to send final assets. Dropbox logs show the date, time, IP address, and device used to open a shared link. R.M. had opened the delivery folder 11 times between November and January. I exported those logs as PDFs.
3. Check the card activity pattern. I contacted my processor (Stripe, in this case) and asked whether there was any pattern of previous disputes on the same card. Stripe couldn’t share other merchants’ data — fair enough — but flagged that the dispute was filed using a reason code (Visa reason code 13.1: Merchandise/Services Not Received) that didn’t match the documented evidence.
4. Cross-reference the social media trail. R.M.’s business Instagram had posted one of my designs — with their branding applied — three weeks before filing the dispute. I took timestamped screenshots using the Wayback Machine and a third-party archiving tool to make them tamper-proof.
5. Request a copy of the chargeback documentation. Your processor is required to give you the cardholder’s stated reason for the dispute. Read it carefully. R.M.’s stated reason was internally inconsistent — she claimed she “never received the files” but also complained about “poor quality.” You can’t have both.
6. Compile the rebuttal letter. This isn’t a venting exercise. It’s a legal document. Keep it factual, chronological, and referenced to exhibits. Mine ran to four pages with eight labelled attachments.
7. Submit within the deadline and follow up. Stripe gave me 10 days. I submitted on day 6, confirmed receipt, and kept a record of that confirmation. Seven weeks later: the chargeback was reversed in my favour.

What the banks won’t tell you about disputing chargebacks as a merchant

Banks have no institutional incentive to make the merchant dispute process easy. That’s not cynicism — it’s just the commercial reality of how card networks are structured. Issuing banks earn interchange fees on every transaction. Acquiring banks (yours) earn processing fees. Neither has a direct financial interest in the outcome of your dispute. You’re fighting a process designed for volume, not justice.

A few things I wish I’d known before this happened:

• The chargeback reason code assigned by the cardholder’s bank is almost always chosen by the cardholder, not verified by the bank. Reason codes are a starting point for your rebuttal, not a finding of fact.
• Under Visa’s dispute resolution framework (Visa Dispute Resolution or VDR), merchants who provide compelling evidence can trigger a pre-arbitration round before the matter escalates to Visa directly.
• In New Zealand, the Banking Ombudsman Scheme covers consumers but not merchants in most scenarios. Your primary recourse is through your acquiring bank and, ultimately, the card network’s own arbitration process.
• Most payment processors (Stripe, PayPal, Square) charge a dispute fee — often between NZD $20 and $30 — regardless of whether you win. That fee is non-refundable even if the chargeback is decided in your favour.
• If a merchant accumulates too many chargebacks — Visa’s threshold is typically 1% of monthly transactions — they can be placed on a monitoring programme. Friendly fraud can literally destroy your ability to take card payments.

And here’s something most articles won’t tell you: the sophistication of fake chargeback fraud has increased markedly since 2024. Some claimants now use AI-generated “evidence” — fabricated email threads, doctored screenshots — to support their disputes. Which brings me to a related warning: if you’re ever unsure whether the financial institution or payment platform you’re dealing with is legitimate, it’s worth understanding how to identify a fake bank in New Zealand — because fraudulent operators sometimes construct elaborate payment ecosystems specifically to exploit chargeback rules.

The evidence that actually won my case

Not all evidence is equal in a chargeback dispute. Payment processors and card networks have specific standards for what constitutes “compelling evidence” — and understanding that distinction is the difference between winning and losing.

The combination that won my case was the file access logs plus the customer’s own written satisfaction note. Together, they made the “services not received” claim logically impossible to sustain. The issuing bank — in this case ANZ New Zealand, acting for R.M. — ultimately upheld my rebuttal and reversed the chargeback.

“Merchants who present timestamped delivery evidence alongside written customer acknowledgment have a substantially higher rate of chargeback reversal — the combination directly contradicts the most common dispute reason codes.”

— Monica Eaton, Founder of Chargebacks911, speaking at the 2024 MRC Vegas Merchant Risk Council Conference, as reported by PYMNTS.com

What small business owners in New Zealand should do right now to protect themselves

Winning a dispute after the fact is satisfying. Preventing one in the first place is better. The honest answer is that no system is completely bulletproof — but some businesses are dramatically easier to defraud than others, and most of the risk is structural, not random.

Here are the most effective protective measures I’ve implemented since the dispute — and the ones I wish I’d had in place before it:

1. Use written contracts for every engagement over NZD $500. Even a brief email chain that establishes scope, price, and delivery method counts. The absence of a paper trail is what makes service businesses so vulnerable to friendly fraud.
2. Send deliverables through platforms that log access. Dropbox, Google Drive, and WeTransfer all provide some form of delivery tracking. Enable notifications and export logs regularly. This alone can make or break a dispute response.
3. Request written sign-off on completion. A simple email asking “Can you confirm you’ve received and are happy with the final files?” creates a documented record that is extraordinarily difficult for a fraudulent chargeback claimant to overcome.
4. Use Stripe Radar or equivalent fraud scoring tools. Stripe’s built-in fraud detection flags high-risk transactions before they’re processed. A card linked to multiple previous disputes should raise a flag. You can also enable 3D Secure (3DS) authentication for higher-value transactions — this shifts liability to the issuing bank in many dispute scenarios.
5. Keep a chargeback response template ready. When you have 10 days to respond, you don’t want to be starting from scratch. Build a template that covers your business type, with placeholders for evidence and dates.
6. Archive social media as part of your project close-out process. If a client uses your work publicly, document it at the time. The Wayback Machine crawls inconsistently — don’t rely on it retroactively.
7. Know your processor’s dispute timeline. Stripe gives 10 days. PayPal’s timeline varies by dispute type. Square typically allows 7–10 days. Missing a deadline means an automatic loss, regardless of evidence.
8. Understand Visa’s Compelling Evidence 3.0 rules. Introduced in 2023, Visa’s CE3.0 framework allows merchants to counter fraud-coded disputes by demonstrating the cardholder transacted successfully with the same merchant at least twice before. If you have repeat customers, document that history — it’s a powerful shield.

The uncomfortable truth about how card networks handle merchant disputes

Seven weeks after I submitted my rebuttal, I received a one-line notification: the dispute had been resolved in my favour. No explanation of what turned it. No acknowledgment that a fraudulent claim had been made against me. No suggestion that R.M. would face any consequences whatsoever.

That last point is worth sitting with. In New Zealand, filing a false chargeback claim can theoretically constitute fraud under the Crimes Act 1961 — specifically sections relating to obtaining by deception. But in practice, card issuers don’t report individual cardholder behaviour to authorities, processors don’t share dispute histories between merchants, and most small business owners — even those who win — never pursue legal action because the cost and complexity aren’t worth it for a single incident.

According to a 2024 report by The Nilson Report, global card fraud losses — including friendly fraud — exceeded USD $33.8 billion in 2023. New Zealand-specific figures are not broken out separately, but the country’s card payment volume grew 8.3% year-on-year according to Reserve Bank of New Zealand data, meaning the surface area for dispute abuse is expanding alongside the market.

The system, in short, is designed to resolve disputes — not to punish bad actors. If you’re a merchant, you need to treat that as a fact of life, not an injustice to wait for someone else to fix.

Frequently asked questions about fighting fake chargeback claims in New Zealand

Q: How long does a chargeback dispute typically take to resolve in New Zealand?
A: Most disputes through processors like Stripe or Square take between 60 and 120 days from initial filing to final resolution. The merchant’s response window is typically 7–10 days, but the issuing bank and card network review process takes considerably longer. You can expect the funds to remain reversed throughout this period.

Q: Can I report a fraudulent chargeback to the police in New Zealand?
A: Yes, technically. Filing a false chargeback claim that results in financial loss can constitute fraud under the Crimes Act 1961. In practice, New Zealand Police treat low-value individual cases as a low priority. Your stronger route is through your acquiring bank and, if unresolved, the Financial Dispute Resolution Service (FDRS) or the Banking Ombudsman Scheme — though both primarily serve consumers, not merchants. For higher-value cases, a civil claim through the Disputes Tribunal (up to NZD $30,000) is a realistic option.

Q: What is the most common reason code used in fake chargeback claims against service businesses?
A: Visa reason code 13.1 (Merchandise/Services Not Received) and Mastercard’s equivalent (reason code 4853 — Cardholder Dispute) are the most commonly misused codes in friendly fraud against service-based businesses. They’re chosen because they’re difficult to disprove without documented delivery evidence — which is exactly why maintaining access logs and written sign-offs is so important.

Q: Does winning a chargeback dispute stop it from affecting my merchant account?
A: Partially. A won dispute still counts toward your chargeback ratio during the period it was filed — it takes time for processors to adjust. Visa’s monitoring threshold is a chargeback rate of 1% or more per month. If you win consistently, your ratio should normalise over time, but a cluster of disputes in a short period can still trigger scrutiny from your processor regardless of outcome.

Q: Should I use 3D Secure for all my transactions to prevent chargebacks?
A: It depends. 3D Secure (3DS) authentication shifts liability to the issuing bank for transactions where it’s applied — meaning if a cardholder disputes a 3DS-authenticated transaction as fraud, the bank bears the loss, not you. However, 3DS adds friction to the checkout process and can reduce conversion rates, particularly on mobile. The sensible approach for most NZ small businesses is to enable 3DS for transactions above a set threshold (say, NZD $500) and for customers you haven’t transacted with before.