Hello mondragon-contra,
Welcome to Community! QuickBooks Online enables you to record supplier refunds to your payment method, to ensure your books remain accurate. I would be happy to show you how!
Follow these steps to record the supplier refund to your credit card;
1. From the left menu, open +New and select Credit card credit
2. Enter the supplier In the Payee field
3. Us the Bank/Credit account ▼ dropdown menu to select the credit card where you received the refund to
4. Enter the Payment date, refund Amount, Tax, and Category
Note: The category used here is the original expense account on the original bill.
5. Hit Save and close.
If you have any other questions, feel free to reach back out. We would be glad to help!