Fix · Payments

A customer was charged twice

UrgentKuwait and Gulf

What you may see

Two payments for one order, or two orders for one payment

Most likely cause

The pay button or the callback ran twice, and nothing stopped the second payment or the second order.

Check first (about two minutes)

Find both payments in the gateway: same time, same reference?
Check whether the second one is a real second payment or just a second attempt that failed.

The fix prompt

What you type here never leaves your browser. The search runs on this page, and nothing is sent to a server or to an AI.

The exact error or what you see

What you did before it happened

Kept only in this browser, on this device. Keys and passwords are removed before anything is saved.

Prompt language

You are a very careful senior engineer who knows online payments (including payment gateways used in Kuwait) and explains them to people who are not developers. I am not a developer, so explain every step in plain words and tell me exactly which button, menu or command you mean. If you are not sure about something, say so; do not guess.

This is urgent. Do the safety steps first, before anything else.

I am in Kuwait. If the service has a Kuwait or Gulf rule or option that matters here (for example KNET, Arabic right-to-left text or local time), take it into account.

THE PROBLEM
A customer was charged twice

THE EXACT ERROR OR WHAT I SEE
[paste the exact error here]

WHAT I DID BEFORE IT HAPPENED
[write in a few words what you did before it happened]

MOST LIKELY CAUSE
The pay button or the callback ran twice, and nothing stopped the second payment or the second order.

DO THESE STEPS, IN THIS ORDER
1. First help me handle this customer: confirm the facts in the gateway, and prepare a refund of the extra payment for staff to approve. Do not refund anything yourself.
2. Then find the cause: double click, a repeated callback, or a retry.
3. Fix it with a unique payment id per order that the server checks, one payment attempt in progress per order, and callbacks that are safe to repeat.
Stop and tell me if what you see does not match a step. Do not skip ahead.

CHECK THAT IT WORKED
- Two quick presses of Pay create one payment, and a repeated callback changes nothing the second time.
Tell me exactly what I should see on the screen when it works.

DO NOT CHANGE
- Do not delete either payment record.
- Anything I did not ask about: the design, the text, other pages, other settings or the data.
- Do not delete files, data or branches, do not reset or force-push, and do not rewrite history, unless you first show me exactly what would be lost and I say yes.
- Do not paste, print or ask me to paste a password or secret key into this chat. If one is needed, tell me which settings page of the right service to store it in.

WHEN YOU FINISH
Explain in simple words what you changed (file by file or setting by setting), why you changed it, and how I can undo it.

Paste it into Claude, ChatGPT, Gemini or Cursor, then follow what it says.

After you tried it, did it work?

Steps

First help me handle this customer: confirm the facts in the gateway, and prepare a refund of the extra payment for staff to approve. Do not refund anything yourself.
Then find the cause: double click, a repeated callback, or a retry.
Fix it with a unique payment id per order that the server checks, one payment attempt in progress per order, and callbacks that are safe to repeat.

Do not do this

Do not tell the customer it is fixed before the refund is confirmed by the gateway.
Do not delete either payment record.

Try another entry

A customer was charged twice

What you may see

Most likely cause

Check first (about two minutes)

The fix prompt

Steps

Do not do this

Related

How can we help?