If you have not filed already, you can change your banking information by doing the following:
When you log into your account and go back into your tax timeline, you should see the File tab at the end.
There are three steps listed. Click on Start/Revisit next to Step 2. Then click on in my bank
Once here, if there is an account listed that is incorrect or nor current MAKE SURE THE BOX UNDER THE ACCOUNT INFO IS UNCHECKED (will say something like "I want my refund in this account")
When you hit Continue, it should take you to the next page which will allow you to update your information
Once everything is entered in, click continue at the bottom and it should take you back to the three step page