Reliance Bigtv — installation of dth

Address:

Bangalore, Karnataka, 560064

I pre booked the dth connection from reliance big tv on 1st march '18, and i received a message that the installation would be done within 30 to 45 days, but after 45 days i received a message saying the installation would happen by jun 15. And its more than 5 months now neither the installation happened nor i have been contacted by anyone even after writing several emails to the customer care/installation team. Need to know what is happening... Why the customer is unnecessarily being dragged by the fake ad by reliance big tv, and millions of innocent customers like me are falling prey to this kind of ads.
My booking id is 12512605.

Need to know what is the next course of action reliance big tv is gonna make whether it would refund the money with interest or would they go ahead with the installation.

Based on the response i am even looking to take this matter legally.