Cable Tv — book for a Kerala vision set top box but no response

Address:

Malappuram, Kerala

I was book a Kerala vision set top box in a local cable operator before a 36 days. they tell that set top box is delivered within 15 days but now they are not attend my call. one identity card copy, one photo and 2000 rs are in their hand but I have no evidence for that like bill or receipt what to do I am