Fake Call Asking About Atm Usage — Fake Call asking about ATM usage

A person with no [protected] is calling my wife on 18 & today 20th Aug-15 and asking about atm details, when i called hime he says he is calling from bandra atm head office (rbi) to which i had threaned him of complaint police to which he disconnected the phone. his cell no belongs to Bihar & jharkhand Request to look into such type of fraud cases to avoid any any major fruad in future..