Independent TV — my pre booking amount is not refunded yet

Address:

Mumbai City, Maharashtra, 400067

Independent tv have looted me they are fraud from last 1year they are not refunding my money. On 1st march 2018 i had paid 500 for preebooking amount for dth service and as per their promise it was to be installed within 30-45days but it didn't so they promised me to give refund and ispite of sending mail with all my bank details for more than 100 times still the haven't replied and even customer service is saying they can't help. I need my hard earn money back.