Airtel — illegal deduction of rs.75/- from my balance for undemanded hot chilles

To day I got a message from Airtel that Rs.75/- was deducted from my account for activation of HOT CHILLES. I deactivated it by SMS. But the amount Rs.75/- was not refunded.Offering value added services without demand from the customers is an offence. this type of pick pocketing from customers should legally be checked by authorities concerned.