What Amex Reason Code C28 Means
Amex reason code C28 is titled Cancelled Recurring Billing and falls under Consumer Disputes. It is filed when a cardholder asserts that they cancelled a recurring billing arrangement — a subscription, membership, or installment plan — but were charged again after the cancellation. This is the direct recurring dispute code; the related code C18 is a procedural escalation when a merchant fails to respond to the C28 inquiry stage.
Amex has historically been more consumer-protective on recurring billing disputes than Visa or Mastercard. Amex rules place significant obligations on merchants to make cancellation accessible and to stop billing promptly upon valid cancellation. Merchants who cannot demonstrate the cardholder failed to follow the cancellation process — or that the charge predated a valid cancellation — face an uphill battle.
Code C28 covers post-cancellation charges. If the cardholder claims they never authorized the recurring billing in the first place, that is a fraud code. If they dispute the quality or description of the service, that is C31. C28 is specifically the scenario where enrollment was valid but billing continued after cancellation. The cancellation records — or their absence — are the central evidence.
Cross-Network Equivalent Codes
| Network | Code | Title | Notes |
|---|---|---|---|
| Amex | C28 | Cancelled Recurring Billing | This page |
| Visa | 13.2 | Cancelled Recurring Transaction | Direct equivalent; same evidence strategy |
| Mastercard | 4841 | Cancelled Recurring or Digital Goods | Direct equivalent on Mastercard |
| Amex | C18 | No Reply to Inquiry – Cancelled Recurring | Escalation when C28 inquiry goes unanswered |
Common Trigger Scenarios
- Cancellation processed after billing cycle cutoff. The cardholder cancelled on the 15th; the billing cycle processed on the 14th. Technically the charge predated the cancellation, but if the cancellation was not processed promptly, the cardholder may still dispute.
- Cancellation received but not processed in billing system. Customer service acknowledged the cancellation request, but it was never actioned in the subscription management system. The next billing cycle charged the cardholder again.
- Annual subscription charged after monthly cancellation. A customer cancelled a monthly plan, but a separate annual subscription renewing on a different cycle was not cancelled. The cardholder disputes the annual charge as a continuation of what they thought they cancelled.
- Free trial auto-renewed without clear notice. A free trial automatically converted to a paid recurring subscription. The cardholder claims they cancelled during the trial or were not adequately informed of the conversion. Amex is particularly strict about free-trial-to-paid scenarios.
- Friendly fraud on an active subscription. The cardholder is still actively using the service but claims they cancelled to avoid paying. The subscription platform logs show continuous active usage during the disputed billing period.
Key Deadlines & Timeframes
| Milestone | Timeframe | Notes |
|---|---|---|
| Cardholder Filing Window | No time limit | American Express does not impose a time limit for cancelled recurring billing disputes under C28 |
| Inquiry Response Window | 20 days | Respond to inquiry before it escalates to C18 |
| Chargeback Response Window | 20 days | From C28 chargeback receipt; respond promptly |
Evidence You Will Need
- Subscription enrollment agreement showing the cardholder signed up for recurring billing, the billing frequency and amount, and the cancellation terms they agreed to
- Cancellation policy as it existed at enrollment, showing the required process for cancellation — accessible and clearly communicated
- Cancellation records (or absence thereof) — your subscription platform's log showing no cancellation request was received before the disputed charge date, or the timestamp of a cancellation received after the charge was already processed
- Service delivery confirmation showing the subscription was active and accessible during the disputed period — login logs, content access records, or service delivery evidence
- Communications records including any response to the cardholder's cancellation request or any pre-renewal notification sent
- Active usage logs if the cardholder was using the service during the period they claim they had cancelled — strong evidence against a friendly fraud C28
Learn Exactly How to Package and Present This Evidence
The Cancelled Recurring Defense Guide covers the exact documentation format for C28 representments, how to present cancellation policy evidence, and how to handle the hardest scenario — a cardholder who cancelled but kept using the service.
Learn exactly how to package and present this evidence →How Merchants Lose This Dispute
- Cancellation was valid and charge was erroneous. If the cardholder followed your cancellation process and was charged anyway, accept the chargeback and fix your billing system. No evidence strategy overcomes a valid post-cancellation charge.
- Cancellation process is difficult or inaccessible. Requiring customers to cancel only by mail, phone during limited hours, or through a confusing multi-step process when they signed up online will not protect you. Amex expects cancellation to be as easy as enrollment.
- No cancellation records in your system. If your subscription platform does not log cancellation requests with timestamps, you cannot prove the cardholder did not cancel. Implement logging before you need it — you cannot retroactively create these records.
- Pre-renewal notifications not sent or poorly designed. Amex expects merchants to notify cardholders before annual renewal charges. Failing to send pre-renewal notices, or sending them to an unmonitored email, weakens your defense against post-renewal disputes significantly.
Get the Step-by-Step Winning Strategy
Our Cancelled Recurring Defense Guide includes subscription platform evidence packaging, usage log documentation, and the representment narrative that wins C28 disputes when you have the evidence to support your position.
Get the step-by-step winning strategy →Response Framework Overview
- Present the enrollment agreement. Show the cardholder signed up for recurring billing with the disputed amount, frequency, and cancellation terms clearly stated.
- Address the cancellation claim directly. Show either no cancellation was received before the charge, or the cancellation was received after the billing cycle had already processed.
- Demonstrate service was delivered. Show the subscription was active and accessible during the disputed billing period.
- Present usage logs if available. If the cardholder used the service during the disputed period, this is strong evidence the cancellation was not actually in effect.
- Reference pre-renewal notification if sent. If you sent a renewal reminder before the charge, include it to show the cardholder was informed.
Prevention Tips
- Make cancellation as easy as signup. If customers can sign up in 30 seconds online, they must be able to cancel in 30 seconds online. Any friction in your cancellation flow increases C28 chargebacks and is increasingly a regulatory concern beyond just chargeback exposure.
- Send pre-renewal notices for annual subscriptions. Email cardholders 7-14 days before any annual renewal charge, clearly stating the amount, date, and how to cancel before the renewal. Pre-renewal notices dramatically reduce post-renewal C28 disputes.
- Log and timestamp every cancellation request immediately. Your subscription platform must capture the exact date and time of every cancellation request and confirmation, across all channels. This is your primary defense evidence.
- Process cancellations same-day. Any delay between receiving a cancellation request and processing it in your billing system creates a window for a valid post-cancellation charge. Automate cancellation processing where possible to eliminate human delay.
Frequently Asked Questions
What must merchants prove to win an Amex C28 dispute?
Merchants must show either: no cancellation was received through the required process before the disputed charge; the cancellation was received after the billing cycle had already processed; or the cardholder agreed to terms (like an annual commitment) that make the charge valid despite the cancellation claim.
What cancellation methods must I accept under Amex rules?
Amex requires that cardholders be given reasonable and accessible means to cancel. You cannot require cancellation only through a single difficult channel if you enrolled them online or via phone. If a cardholder submits a cancellation through a reasonable channel and you charge them anyway, the C28 chargeback is valid.
How does Amex C28 compare to Visa 13.2?
Both codes cover recurring charges that continued after cancellation with nearly identical evidence requirements. Amex C28 disputes often go through an inquiry stage first (which if missed becomes C18), while Visa 13.2 typically proceeds directly to chargeback. Amex is also somewhat stricter about requiring accessible cancellation methods.
Can I charge a cancellation fee and still face a C28 chargeback?
Yes. If the cardholder disputes the cancellation fee itself as unauthorized, that may trigger a C28 or C31 dispute. Cancellation fees are defensible if clearly disclosed at enrollment. Hidden or undisclosed cancellation fees are very difficult to defend.