State Bank Of India [SBI] — fraudulent transaction on my sbi credit card

Address:

560099

I am sivaprakash. I am holding sbi credit card for the last 5 months. I received a phone call ([protected]) on 31.07.2019 and she is introduced as darva chowdhry from sbi rewards section, gurgaon commercial branch. She is verified my details like pan card, addresses and my last payment. After verification she said to feed the ivr otp in mobile to claim the reward points. But i denied to share my otp by phone call. But she is given her employee id (66506) branch code (4079) and she told me to continue the process otherwise card will be blocked. But i did not feed the otp in mobile. After 5 minutes my card is debited with 11500 rs in two different merchants. Again i called her and she said that amount will be under hold, after 48 hours it will credit. For the better confirmation i called sbi customer care and they are confirming that is fraud call and suggested me to file the fir in nearest police station. Today her mobile is switched off.. I lost my money. Is there any possibility to get my money back. And still i am not believe, how she got my all details including my transaction? Be aware..