Reliance Bigtv — reliance big tv installation not done yet

Address:

Lucknow, Uttar Pradesh, 226002

I applied for connection on 23rd march 2018. As per their website and t&c, installation need to be done with in 30-45 days. Today is 4th may and it's been 41 days now but there is no sign for installation.
My booking id is 14534912. Please resolve the problem as soon as possible. They have already taken rs. 500 as prepayment for the connection. Solve problem. Thank you.