Reserve Bank Of India [RBI] — fake calls asking for atm details

I Received a call from [protected]. The caller said he is from RBI and he needs my ATM details or else it will get blocked. I told him if you are from RBI, you should be having my personal details so tell me my name and in which bank do I have an account. He did not tell my name but he said your SBI debit card will get blocked. Then I replied that I do not have an account in SBI. So he said OK and disconnected.
Legal action should be taken on these kinds of people.