Tracker sharing other customer vehicle details with me!!!!

Cancellation of contract and 1.5 months later I can see the vehicle movements on Skytrax! Every detail! This is shocking and in violation of the privacy act. What can be seen by others of my family's cars!!!!? The very best is that I have to pay for cancellation to refit Tracker to my wife's new car! That is I have to pay Tracker to REMAIN a customer or leave completely. (If I knew it would've been such a mess I would not even fitted tracker?) The reduction on insurance is less than the units cost and now I have a doubt about my personal detail and wife and children details!!! Now I can see 2 cars! But be very sure the money has been deducted!!! I simply cannot trust this company with my family in South Africa. A cancellation was 700. The final debit order was 1 144? Now to get all my cars cancelled will certainly cost me more because Tracker is dangerous! What happens if the other vehicle gets compromised!!!? Who do I escalate to? I called your call centre twice... Get your "probes" out if my family's vehicles now with proof - not simply deactivated - because I have proof it does not work! It makes me sick! This is *********!!! I have a obligation to let the dealership know that this is the case with the current vehicle.