The customer paid twice because their first attempt looked declined. What now?

Refund one of the captures immediately and document the credit in your dispute response. Contesting a genuine double charge damages your credibility on future cases.

How do I prove the customer did not pay by other means?

You largely prove the affirmative: one order, one capture, one balance. Provide the order's complete payment history and, where the customer offers alternate-payment evidence, show it maps to a different transaction.

American Express · Consumer Disputes

Reason code C14: Paid by Other Means

C14 asserts that the cardmember paid for the purchase through another method, cash, check, a different card, or a gift card, and the Amex charge is therefore a duplicate collection. The merchant ends up holding two payments for one sale, at least in the cardmember's telling.

Issuer filing window

typically 120 days from the charge date

Merchant response window

typically 20 days to respond

Why C14 chargebacks happen

A declined-then-retried checkout collected on both the Amex and a second card the customer switched to.
In-store staff ran the Amex, hit an error, took cash, and never voided the card transaction.
The customer paid an invoice by bank transfer while an auto-charge hit their stored Amex for the same balance.
A gift card or store credit covered the order, but the payment flow still captured the backup Amex.

How to fight a C14 chargeback

Reconcile the sale and show only one payment was actually captured for it, with the full payment history for the order.
If two payments genuinely exist for separate purchases, provide both receipts or invoices demonstrating they are distinct transactions.
Ask for the cardmember's evidence of the alternate payment and rebut it: a cash receipt, cleared check, or other card statement should be traceable to a different sale or nonexistent.
If a duplicate collection really happened, refund the redundant payment immediately and report the credit in your response.

How to prevent C14 chargebacks

Void failed or abandoned card attempts in the same session instead of leaving them to settle.
Make invoices payable through a single channel per balance, and auto-cancel card billing when a transfer posts.
Train retail staff to void the card transaction on paper whenever a customer changes payment method mid-sale.
Run a daily duplicate-payment report matching order IDs against multiple captured tenders.

Frequently asked questions

The customer paid twice because their first attempt looked declined. What now?: Refund one of the captures immediately and document the credit in your dispute response. Contesting a genuine double charge damages your credibility on future cases.
How do I prove the customer did not pay by other means?: You largely prove the affirmative: one order, one capture, one balance. Provide the order's complete payment history and, where the customer offers alternate-payment evidence, show it maps to a different transaction.

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