Airtel — null network

Address:

New Delhi, Delhi, 110008

Dear airtel team,
I am telling you with great sorrow. That your network does not come inside my house. By staying in a place like delhi i have to go to the roof and talk to the people whether it is the network of airtel. I have been using these numbers from last 10 years. And in such a condition i will not be able to use this number for a long time. Please help me and correct my area's network. My contact [protected]