I'm guessing your bank has the wrong number for you. This Likely isn't a problem with binance as I assume you're paying via a secure debit card (or some other way yoh don't have to verify via your online/mobile banking services).
I'd suggest you go into the bank and ask them to change it (take your ID and account info such as your last statement or your card) .
I just finished talking to my bank over the phone, and was able to get the problem solved. I re-logged back into binance and the problem was solved. Thank you very much!