Bank Account/ACH payments must be voided or refunded through your gateway virtual terminal; this cannot be done from within your Jackrabbit database.
Once you have done the void or refund of the Bank Account/ACH ePayment in the virtual terminal, click the R on the payment line to record that void or refund to the family's transactions in Jackrabbit. It is a Jackrabbit Best Practice to copy and paste any Transaction ID received in the virtual terminal into the notes of the transaction in Jackrabbit.