Airtel — airtel mobile network coverage issue

Address:

Pune, Maharashtra, 411027

I rarely get any network on my number at both office as well as home and even in other areas . Voice breaks during call. Many times my number is not reachable.
And today after rain it has been 6 hourse there is not network.
It is not oy with me but also the other airtel users .
Please resolve the issue else i will port to other telcom service.