As a five years Airtel customer one thing I ralize that it is only for the aristocratic customers. Because all the packs of this network is very costy. It is not within the range of middile class families.
However, in case of network coverage it is leg behind of vodaohone pvt. Lt. Most part of urban, semi urbaban and village areas of the country are out of network coverage of Airtel.
The customers support system is also not satisfactory. Most of the time we are not able to connect or continued ringing but there is no ones reply. If anyone pick up the just reply casually.
So I think it is one the worst network of the time.