Reliance Communications — unwanted vas subscription

Unwanted vas are subscribed and amount is deducted for my reliance gsm number.
I unsubscribed the service by replying to the message i received regarding subscription.
Later i was subscribed to other vas and the amount is again deducted.
I called to customer care, the response was not helpful. For both instances they replied back saying its from your end bla bla... Its not just a couple of times i faced this issue. There were such instances in past as well.