Airtel — call drop/poor signal strength / slow internet

Address: 600096

Website: airtel.in

My office is located in omr (Near ptc bus stop), one of the prime location in chennai, from past 2 months all the airtel customers in my location are facing network coverage/call drop issues. We have raised complaints against the same with airtel customer care but the same is not resolved. The airtel numbers are not reachable when in the premise also not able to make calls. The internet connectivity is very slow. Airtel complaint numbers :81942131, 81942185

If we raise complaints, airtel is closing the tickets without even resolving the issue.

In advertisement they claim they have good signal strength even in jungle and the fastest network.
But in reality airtel does not live up to the promise