Airtel — service not being provided even after multiple reminder

I have registered a comaplint about poor transmission and poor picture quality at airtel dth customer service number and also on thier twitter handle, from 24th may 2018, wherein they assured that issues will be solved in 24hrs and technician will visit at address to solve the problem, however nobody visited the place.
Airtel dth no. [protected]

Have tried contacting them multiple times, and everytime when called a new representative come up who was having no idea about what has already been registered, it is actually very irritating to explain the same complaint every time.
Sharing some of the complaints number here also viz 75083306, 75081629, 75561734.

Kindly provide solution...