MTN's ********** GameOn Service

Saturday morning, around 6:12 am, I got a text from MTN telling me that I had been successfully subscribed to a service called GameOn. I had not clicked on any internet links, which is always the bull**** story that we get told by consultants over the phone. In fact, if it was really coming from some ********** service, I would not a) gotten a notification from MTN, b) been informed by an sms that I could unsubscribe from the service on my own. The SMS also informed me that the T's & C's are available from the MTN website. I want to know how was I subscribed to this service. I also want to know when you will refund my airtime that was deducted for it.