Airtel — network issue and airtel monthly recharge related

Address:

New Delhi, Delhi, 110012

Hi,
I am facing network issue from last one month and for your information i'm recharging every month around rs.345or 349/- for 28days which offers unlimited call to any mobile & 1gb data/ per day.
This time i recharge with 399 which was showing in my best offer that is 84 days unlimited call to any mobile & 1gb data/ per day.
But now its showing expire on 17aug2017 which is with in 20 days only and also network cells are fluctuating continuously 2-1, 1-0, 0-1, due to this i am facing worst situation to make and receive calls from my number, voice breaking is also another issue on this number, i have called so many times to airtel customer care but did not get any resolution.
Please find the enclosed picture for better understanding.
Reply me as soon as possible

[protected]@gmail.com