Reycreo monthly charge - MTN are ******!

MTN keep adding a Reycreo monthly charge of R9 to my account. They send an SMS to tell you that you will be billed, with the option of cancelling that renewal. That's great, MTN, but no where did I sign up for this service! R9 isn't a lot of money for one person, but multiple that over a million people and it's a **** load of money that they are getting through signing me up for something that I didn't agree to. You guys are ******!