You are not processing debit card transfer. Based on my experience, I would never use your service to process payments. I'm suprise that folks are using your payment system. Seem that you never process the payment to the bank via debit card and just rejected them out right.

The only reason I am using this is because of one of my client's transactions.

I have zero confidence in your payment system based on this experience. The problem appears to be on Intuit's end.