Airtel — modelmaniaw service activated in my mobile [protected]

Address:

Mehsana, Gujarat, 382715

All of a sudden yesterday i received amessage from airtel that in your mobile [protected], modelmaniawservices are activated and rs 30 /- was deducted from my mobile balance.
I do not understand how the company can activate such services in my mobile without my request.
The company does deduction without any confirmations to the customers. And customers are suffering.

I request the company to return my deducted money in my mobile balance.