Reliance Bigtv — booked a reliance big tv connection but was frauded

Address:	Lucknow, Uttar Pradesh, 226024
Website:	reliancedigitaltv.com

I booked a reliance big tv connection as it was limited offer on their website, starting from march (That limited offer is live now also).
So i booked a connection on 8th march and paid a fee of rs.500 (Booking id:[protected] and they told that installation will take place in some 40-45 days. Now almost 7 months are over, whenever i contact them, they tell that they will install the box within next 7 days but nothing.. I am really fed up with pathetic service of reliance and i want my refund. That was my earned money, for which i worked for days and now i have to buy another stb because reliance will never do the task as they commit.. So all i need is my refund.