We charge a gateway fee to our customers when paying with credit card. We also offer instructions on sending a check or wire to us. If the customer clicks on “pay with credit card” it adds the fee to the invoice. It seems like most of the time if they don’t complete the payment IN removes the fee from the invoice, but sometimes it stays on the invoice even if they choose to send us a wire or check. This results in issues since when we apply the payment it doesn’t complete the invoice fully.
Is there a way to ensure that credit card fee is removed if they don’t choose to pay via credit card?