Airtel was a nice service provider for years together but for more than a year it has been providing pathetic service in terms of connectivity and call dropouts.
It has got a lot of issues along with connectivity as overcharging, miscalculating time and charges while calling.
It used to be the most preferred network a few years ago but is the worst one these days. All those running with Airtel are having a tough time haggling around searching for towers/ signals.