Why upon filing my taxes why is it making me enter a credit card for payment when I have already selected and entered my bank account info for direct debit?

[JacobSteff]

I have selected to pay my balance due by direct debit from my bank account and the site is prompting me to enter a credit card for payment. I do not have a CREDIT card. I do have a debit card.

[VolvoGirl]

It could be for the Turbo Tax fees.  

How to review your fees
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/0...

What forms of payment does Turbo Tax take? If you don't have a credit card you can get a prepaid VISA card at WalMart or somewhere.
https://ttlc.intuit.com/community/payments/help/how-can-i-pay-for-my-turbotax-online-fees/00/27388