MTN Charging me for services not requested - aka Robbing me

Dear MTN,

Last week Wednesday 8 August, MTN subscribed me to Life TV at R2.02 per day, the 1st day being free. I did not request this service - in the text message, they provide steps to take if you want to unsubscribe, but if you follow the steps, you still can't unsubscribe. I had to call in to cancel and we all know how call centers work - the wait is almost eternal. Eventually I got through to an agent and she cancelled the subscription. She kindly told me what to do to block any such future subscriptions, which I immediately did. Low and behold, yesterday MTN sends me an SMS subscribing for one free day to CR7 Lifestyle and today I received an SMS stating that my free access has ended and I will be charged R3 a day. Will I have to cancel these unsolicited subscriptions every week? Call the call center every week to cancel? Is this even legal? Charging me for something I haven't requested. MTN yet again raise the disappointment bar. Will have to address with the ombudsman.