Worst service

So I bought a tuk tuk and took over the dealers contract from tracker. The salss agent told me that it works like a prepaid service if I pay the tracker works if I don't its off, he also didn't inform me about any cancelation fee.

Anyway sold the tuk tuk 2 months ago and my account was paid up.. i requested to cancel the service and tracker told me to pay around R800 for cancelation which I feel is ridiculous. Now they calling me everyday to tell me the same nonsense. Why pay for something I don't even have? Why a cancelation fee? I understand that its a contract but why pay a cancelation if they service worked like a pre-paid contract if you don't pay theres no service.

I will never ever use tracker again or even recommend it to anyone. What if I just lost my job what if I had no income at all?

On the other hand their call center agents are arrogant.