Airtel — network down

Address:

110067

My airtel network is not working for 3 days. Suddenly network signal just went off and i tried to switched off and on still not working. I even took the sim out and re inserted but to no avail. Iam from delhi and have been using airtel for the last 5 years. I dnt understand why network signal is not available. I use jio sim too as secondary no on the same phone. Please help.