State Bank Of India — Cash back offer

Address:

Chennai, Tamil Nadu

Hi, We had bought a refrigerator in the month of October from LG Showroom. They were having offer saying if we use State Bank Debit card, then we would get 5% cash back after 90 days. Now it is more than 180 days, still we have not received the cash back. When we contacted the dealers of LG, they said it was an offer given by State Bank so we would need to contact State Bank for further details. Kindly advise on how to get back the cash back. Thank You.