Reliance Bigtv — installation pending for more than 4 months

I pre-booked (Id[protected] reliance big tv on 26th mar'18 after so much publicity via news channels and daily newspaper.

Waited for 45 dys after booking date as committed by reliance. Since there was no progress, i called customer care. I was told that reliance has started giving connections as per the order of booking and for those who has done booking in march, would get the connection by 30th jun'18. Again they gave a new timeline that all pending connections would be completed by 31st jul'18.

Still there is no development. Today i have been trying to connect cc but line remain engaged all the day. It is now meaningless to linger on further. So request reliance to refund the booking amount as early as possible.