If you would like to provide a refund to your customer for a Credit Card payment made to you, you may easily return funds. You may also void ACH payments the same way:
1. Click the Reporting -> History page tab in the left-hand menu.
2. Look for the transaction you would like to refund and click view to open the transaction details window.
3. Click on the Refund button to expand the refund menu, for an ACH, this button would say Void ACH.
4. You will be asked to confirm that the refund amount will be credited back to your customer.
5. The status will also change to refunded.