To generate a refund, open the Menu in the Pymt app. Tap History and enter the date of the transaction at the top of the screen. All the transactions from that date will populate. Select the transaction from the list and you’ll have the option to resend the receipt or refund the total. Select Refund to initiate a refund. You'll have the option to initiate a partial refund or full refund. 

Refunds are processed with the next deposit batch (usually nightly), some banks/card take can take up to 10-15 days to show refunded funds.