Kindly remove "mtn play airg" subscription

<p>I just received an sms saying that I'm subscribed to mtn play airg and that although my first day is free the rest will be R2 a day! I don't even know what service this is! </p> <p>Please remove me from this subscription. I did not subscribe. in order to remove this I have to log on and create a password and I have never logged on and I refuse to join in order to remove a subscription I didn't apply for in the first place. I also find this very suspicious add the subscription is so late at night. I might have missed this sms if I'd been asleep! !!</p> <p> </p>