Service not cancelled

I am so angry that I always have to call Cell C to cancel the Cell C's Get it service. Last year I gave the go ahead to subscribe to Cell C's Get It service. It was fine for a few months (needless to say that it was totally useless for me), but in June this year I called to have the service cancelled. I called again last week to confirm cancellation, but the service was still active. I was also told that a consultant would call me back. Nobody called from the Cell C Get it service. I called again today and was told the same story as last week. I would love to cancel this service as I do not really need it. The service has gone up by almost 70% in cost. It is annoying that I always have to make the call and end up dissatisfied.