State Bank Of India [SBI] — Fraud transaction from my sbi credit card

Address:

Bangalore, Karnataka, 560004

I am nibruti having a central sbi card. I made this card at central mall, j p nagar, bangalore. I received this card sometime last month. On 25th may, 2017 i got a call from sbi credit card department around 1pm. The lady said she is calling for the verification of a reward card which comes along with the central credit card. I did not provide any details about my card number, dob, name or cvv, rather the lady from her side confirmed my credit card number and expiry date. We spoke for sometime for all details about the reward card benefits and if any hidden charges are there for this. Then the lady passed the call to her manager for final verification. Then in few minutes i got message twice saying twice money has been deducted (10, 000+9990) from my credit card. Then immediately i called sbi customer care checking why money got deducted from my card. They told it was a fraud call and immediately they blocked my card. I asked how come they have sensitive information of my card. They din't have any answer. They said they cannot do anything about the transaction and i have to lodge a fir at police station. I did the same within 1 hour. The fir was lodged. As i dint share any of my information, bank is the only place all mt info was available so this will be highly unfair if the bank doesn't take care of this.
Rs.19, 990/ is really big amount for this. Until this is resolved, i will not pay for this amount.