Reliance Bigtv — reliance set top box pre booking

Address:	Panchmahal, Gujarat, 389001
Website:	godhra gujarat

I have applied big tv connection as part of their pre-booking offer on 2nd march. As per their communication it has to be installed 35 to 40 days from the date of registration. 6 months is over as of today... But still no communication.. Whenever we call to customer care... The number is not working. I have email many times but not getting any reply from such a big company reliance, i have booked 2 set top box. How to contact them is big question at this moment...???