If the patient paid online and you are using EziDebit, under the patients name you will find an invoice for the payment that was made. In the payments, there will be a refund button next to the online payment. 

This will process the refund through the EziDebit API.  

Please note: Refunds will need to have been selected when your did your account application. Generally it is but sometimes it is not depending on the risk profile of the business.

If you are unable to find this button or there is an error processing the refund, this will mean that refunds are not enabled on your EziDebit account. That could be either due to volume of transactions not sufficient to cover the refund or risk profile.

You will need to refund via either cash or bank transfer in this case.