Hi there, @moretti1. The ability to cancel a refund depends entirely on whether the transaction has been Batched (sent to the bank for processing).
Transaction batches close at 3:00 PM PT every business day. Since the refund was processed on March 3 and today is March 6, it has certainly been batched and cannot be canceled.
Since you can't retrieve the funds from the customer's credit card once the transaction is settled, I recommend contacting them immediately. Explain that a refund was issued in error for the February invoice and that you need to re-process the payment.
If you have their authorization, you'll first need to delete the refund receipt. The February invoice will automatically reopen once the refund receipt is deleted, showing the balance due again. When the customer repays you, simply receive the payment as you normally would and process their card again. Then, link this payment to the reopened February invoice.
This process ensures your books stay accurate and your records will match your bank statements exactly.
If you have any additional questions, please feel free to revisit this thread.