Yes.AIRTEL is india no.1costlier network when compared with other mobile operators now a days.
Their offers are less and cost is high but service is recommendable.
Its data cost, calling cost are high when compared with other operators but sms, mms are at standard rate. All of you know they provide 1gb at cost cost of nearly rs.160 its very high when compared with others but their service is good like good and high speed and accuracy in data transmisson when compared with others.
Airtel offers are usable for only once after they get expaired .When dailing* 121# it irritates you when accessing their portal.
They have less partnerships with cashback websites like mobikwik, paytm, free charge etc. These site never give you cashback with airtel recharges and accounts created by airtel numbers. This is major drawback of airtel. When compared with other operators they have excellent cashback offers in paytm, free charge etc.
Finally I recommend airtel who want high speed data( only 3g& 4g) .
But never recommend airtel who want more with less amount, who want best offers and services in 3g& 4g also in 2g, and who want less call cost etc.