Airtel — network issues -- worst case..can't hear properly to make call thru 121

Address:	Chittoor, Andhra Pradesh, 517520
Website:	www.airtel.in

Ours is a corporate connection through sireesha geo granites .
we pay a bill of almost 60-80k per month.
out of many connections 4 numbers we are using at tirupatri.
Me being director of the company, made many complaints to airtel that we donot have network neither at home properly nor at office .

Our house is located at heart of the town ( New balaji colony, but the reason told by your executives surprised me that may be tower issue.
If that is the case how could your advertisements show that your network work even in mountains???

Even through 121 I coudn't hear properly. That's the reason I am filing complaint online.
I just need one single answer whether it can be rectified or should we drop all 40 connections and move to other network.
Actually another 10 connections we took fr0m idea recently due to the issue.