I have had this issue for 2+ years and spent at least 20 hours on the line with customer support on 4 or 5 occasions with no resolution. On 2 occasions I have had the issue elevated all the way to the "software engineers". In both of those cases the ticket was closed a bout a week later saying the issue was resolved but it was not resolved. There was no way to reopen the ticket other than call into support and go in another circle.

My temporary fix- I just create a recurring invoice for the customer and then I go in a enter the card details each time and pay it. It's a pain but I don't know what else to do other than switching to a different merchant completely.