State Bank Of India [SBI] — fraud regarding payback rewards point to sbi card through airtel money

Address: Faridabad, Haryana, 121005

I received a call from [protected] on 16th may, 2018 at 1:02pm and the man introduced himself as mohit dubey from sbi cards. He informed that my existing sbi debit card have rewards point of worth 9500 and they are expired so we can transfer it to your cr. Card agains due balance. He asked me to provide card information, expiry date and cvv number in order to transfer reward points from existing card. So the game begings know he was talking very professionally at a pointi believed that he's gueniune he also send me the ivr verification code from the sbi bank no. (How is this possible i don't know but yes it was from the bank's no) believing him to be sbi person, i provided him the card no. And expiry date then he asked me the 3d security pin which was written at the back of the card i denied it and told him that i can't share it, he told me that he'll not ask me the confidential detail but he was trying to get me by all these tricks. Then i told him fake cvv no so that i got to know that what's the matter. He generated otp (One time password) and the messege comes on my mobile (Otp xxxxxx for your transaction of rs. 9000 to airtel money is...) and then he asked me to inform the otp to him so that the reward points can be transferred. Mean while i have searche the name mohit dubey fraud on google then got to know that there is the gang of these types of criminal who are doin these types of scams then i told him that i'm coming to your office and want to meet you but then he told me that your card is blocked (Obviously i told him the fake cvv the it will have to be happen) if you want reward point then activate it and call us.
Then i call the customer care n told them to permanentaly block my card and they have done it.
Guys n gals these # are very hitech or may be some internal person of the bank itself is leaking the information that this guy have this much amount in his card so loot lo sale ko).
I shared the whole story to beware from these kind of faruds don't share any confidential information on mobile.
Regards,
Ravi