SBI Card — Fraudulent Transaction on my SBI Credit card

Address:	Bangalore Urban, Karnataka, 560027
Website:	MOTO TSPL

On FEB 2nd 2016
One Mr.Bhaskar Raju called from SBI Card centre (Mob no [protected])
called and offered a new Life time SBI Card with 20% cash back offer on each Transaction instead of Reward points. He said SBI will adjust the rewards point against the new card and took card details and said that a Transaction amount of INR 8400 will be debited immediately and the same will be adjusted against the reward points at the time of statement generation. There was an SMS saying that Rs 8400 has been debited on my card from MOTO - TPSL

Today i received a parcel with 2 no Jeans pants from one vendor (MOTO - TPSL) indicating a transaction of Rs 8400. I have not ordered this item. It is
fraudulent transaction. Help to refund the amount of Rs 8400