[Resolved]  Airtel Kerala — Activation of services without request

I reside in Trichur My Air Tel prepaid mobile no is [protected]
Recently on two occasions they have activated hello tunes without my consent, making my callers embracing with the tunes they keep and to best of knowledge they have cut the user charges. Very recently they have activated and cut the money for the missed call alerts. I feel that forcing the services without request is deplorable. If the matter is not addressed I wish to discontinue services.