Refunds are currently only available for card payments. To refund customers that paid using other transaction methods, you will need to make payouts using the payouts API.
When you make a refund request, we refund the customer the exact or a fraction of the amount that was paid by the customer in the original transaction. The details are returned in the API response. The funds are debited from your merchant account and a refund request is created for processing. We will also make a callback to your webhook/callback URL set under your merchant account.