Airtel — illegal activation of value added services

Address:	Kurukshetra, Haryana, 136118
Website:	www.airtel.in

I have been having problem since january, as airtel keep activating random additional channels on my digital tv. Everytime i have to call and ask to them to discontinue those channels and refund the amount that they have charging for no reason.
Now, they have done similar thing with my phone. I have paid rs 30 for the subscription of gaana khazana, though i never requested.
I would like to know if this new business model that they have implementing, i. E. Defrauding money out of their customers.