CarTrack forcing me to their 3 years subscription

What an absolute abuse I get from CarTrack.

They do not want to cancel my subscription after +- 7years with them. I never signed up any 3 year subscription or even renewed for that matter. They want me to pay R3000 cancellation fee which I am not aware of and I am not going pay. I have tried to contact their management but not reachable and keep on sending me emails that I need to pay. Currently CarTrack is *****ulently and I will advise people to think twice before using their services because it will catch up with them later on.