If your bank account number is incorrect and you are due a refund, call 1- 800–829–1954. The IRS will attempt to correct the error, but you may have to follow up with the bank if your refund was deposited into another bank account. If you were making an electronic tax payment, call 1-888-353-4537 to correct the error.

If you cannot change the account number, you will be automatically switched to receiving a check in the mail for your refund, once the bank rejects your deposit.

What if I entered the wrong bank account for direct deposit?

https://ttlc.intuit.com/community/refunds/help/what-if-i-entered-the-wrong-bank-account-for-direct-d...