We can process a refund for your customer's Credit Card payment in the Refund receipt section, @venturatradingpe.
Here's how:
- Click on the +New.
- Under the Customers section, select Refund receipt.
- Fill in the important details using the same information from the original sale.
- Choose the payment method and the account from which you wish to refund the customer.
- Then, select Save.

If you need to issue a partial refund, you may adjust the items or the amount as needed.
For more information on refunding your customer's credit card payment, please refer to this article: Void or refund customer payments.
Also, you can use various financial reports to gain a clear view of your business's financial growth. I have also included a resource where you can find the complete guidelines for customization:
Let us know if you have any further inquiries about the refund process for your customer. My team and I are here to assist you.