I didn't open a bank card in Tianjin, but I received a verification code from bank of tianjin for payment. Will there be any constraints?

Someone else fills in the mobile phone number and fills it in as yours.

Maybe someone else filled in your mobile phone number. If you are not at ease, you can call customer service and ask them to check it for you.

Binding: not only limited to the binding of specific things, but also extended to the merger and listing of virtual things and virtual information.