Vodafone India — unauthorized deduction on the name of wwe zone pack

I haven't ever subscribed to any "wwe zone pack" on my vodafone mobile number. But i still keep getting charged for it, and keep receiving an sms about deductions. When i try to send a stop sms, it says "couldn't send". [i am able to send sms messages to other numbers.] this is very frustrating and feels like i am being cheated. This seems like a dirty trick to steal money. I would like to get a refund of all the subscription money that was deducted without any kind of authorization.