If you have not unbind the OBU device, you do not need to handle the etc business again.

You can go directly to the bank etc branch to make a contract account change, and then provide the debit card number for the change, and the staff will help you change the credit card (credit card) in the etc account on the card. Replaced with a debit card. However, after switching to a debit card, you need to transfer it to the electronic account, otherwise you will not be able to use etc without money.