Verification
Why does verification need my bank account as well as my credit card info?
iPad Pro 11-inch Wi-Fi, Cellular
Where are you doing the verification? Are you using the link below? Is this an email you received? Normally, all you need is a credit card number for verification.
Apple ID payment information - change
If necessary, contact iTunes Support. Either use the form or scroll to the bottom of the page in the 2nd link. Follow through the screens to get a chat or telephone option.