Airtel — calls connectivity is very low

Address:

Anantapur, Andhra Pradesh, 515211

My airtel postpaid number is [protected], works at wipro infrastructure, thumakunta checkpost, none of my relatives - colleagues - friends are able to contact me, as most of my time, it will say not reachable...
Suffering a lot for opting the airtel network, even after repeated complaints, no use...
For just eye wash, one service engineer will visit, take the network strengths and tell us we will resolve the issue, but from the past 06months, the issue is not resolved,
Most of my colleagues are facing the same problem and opting for the port to idea and jio,
For the billing of 574rs, it is not worth even to pay 50rs per month...