My bank account number is incorrect in my return. How do I fix that?

[RamonT]

If you entered incorrect banking information for your refund, you can change it if your return is rejected.  If it is accepted, however, it is too late to change it.  The bank will reject the refund and send it back to the IRS.  Then the IRS will issue a paper check and mail it to the address you put on your tax return.

If you need to change anything and have not filed you can go to the link below and make the changes that you need to do
https://ttlc.intuit.com/replies/5619072