Airtel — network issues persistent

The network issues of Airtel is increasing day by day..
For the past one month receiving calls and making calls have become a big problem
Calling the same number from Airtel and other network has different response ..from Airtel it says not reachable but from other network it gets through in the first dial
Is Airtel also closing down like aircel and relieance that the network issues is increasing day by day
Will they solve the problem or we have to Port to other network
Comsumers have to face so much problem due to the telecom industry .. how many times we have to keep posting and facing problems