Refund not received because of bank account mistake

return should be revised

file a revised return with correct bank details.

1.no need to revise and don't revise also otherwise revised return will be processed very delayed
2.solution is
raise refund re-isuue as soon as

sir
can i change bank account number
when raise refund re issue

yes you can update your correct account number by refund reissue. for more details
https://www.incometaxindia.gov.in/Pages/tax-services/refund-reissue.aspx

Yes, You can simply apply for the Refund Reissue and when you proceed then it is asked that where do you want to receive money i.e. Same account number as given in return or Update the account number.

Otherwise Revision of Return would take double time because the revised return has to be processed first.

Thanks