MTN gamer + nonsense

Hi MTN. Please explain to me how you decided to add the gamer + service to my account with my approval, or me actually requesting this service in the first place. Have I somehow agreed for you to add any service to my account whenever you feel like it? I am really not happy about this. I usually only receive span over SMS, so I find it odd that this was how you decided to communicate this additional charge to my account.