Airtel Cell Phone — mobile phone network worst

Address:

1,JAWAHAR LAL NEHRU MARG,NEW DELHI-110002, New Delhi, Delhi, 110002

I am cardiology imprest store incharge at g b pant hospital new delhi-110002 my chamber is in c-block of said hospital no network available even to make a call in g b pant hospital new delhi-110002 facing problems by so many patients and their relatives coming on regular basis for treatment. They are unable to contact to each other.
This is a big failure by airtel that it cannot resolve the network issue since a long time.
Now, the condition is worst than ever before.