Epaykerala — fraud

Address:

803211

Fraud against my sbi card on 15 jul 2017. Shopmantra epay kerala
I have sbi credit card, i received a call from this mob no. From master and visa verification department at sbi on 15 july 2017. He (Executive) told me that sbi bank will issue a new master micro chip card on behalf of my existing credit card. So first bank debit the charge of rs.-7890 (Same is already been debited) but he assured that it will be adjusted through reward points and the same amount will be credited to my account before generating my bill. I was hesitating to provide otp but somehow i given otp. Immediately my account got debited with rs.7890. I immediately realized somthing fraud happened and i reacted quickly to reach sbi. Thea transaction is yet to be claimed by the merchant. They sbi told me that i would raise complaint when the transaction is caimed for settlement. I wonder how they (Frauds) get my details. Please guide me what should i do further?