When you go to the police station to complain about online bank fraud, they will ask you to file an FIR. You should make sure you give all the information you know about the online fraud that happened to you.
Besides filing an FIR with the cyber crime cell of a police station, you can also file an online complaint on the Ministry of Home Affairs’ Online Crime Reporting Portal. Register a complaint by providing detailed information about the incident. You can also choose to upload files, like screenshots of the e-mails or messages you received regarding fraudulent transactions.