Airtel — no network no data speed

Address:

Bangalore, Karnataka, 560001

I am using airtel postpaid. Iam not getting proper network, many of the tym ppl tel that my mobile is not rechable and call gets disconnected in middle. And 499 plan comes with 40 gb data but m getting 20 gb that too very slow. They are charging me miss call alert charge but till nw i din get evn single msg. I have complained this many times but no solution. And cant port also bcoz 90 days waiting period really this is very worst experience. Never thought airtel has come to this footpath level.