Airtel — unlawful deduction of talk time balance money

Address: 700051

Website: www.airtel.in

Airtel has activated topdoctorsonline service without my consent, which has been deducting rs49 from my talktime balance for the past 3 weeks. They deducted rs 49 twice and rs 7 (My remaining balance), before i caught this act.
I called customer care, who says this has got nothing to do with airtel. Now, in the sms provided, the sender is ak-airsep, and the sms body contains a redirect url for using more airtel services - http://56789.airtel.in. this is a clear indication that this has got something to do with airtel.

I spoke with customer care, who are adamant about the issue, and wont solve it. Because of this, my balance has been reduced to zero, and i am unable to make any outgoing calls/sms.

I have asked the executive to deactivate this service, and would like a full refund of rs 49+49+7 = rs 105