Ignoring request to terminate service

I contacted Tracker on 18/01/2016 to request the cancellation of my service with immediate effect. I have sold my car and the present owner does not wish to continue with the service. I am residing in Canada at the moment.<br> <br> Despite multiple emails to two of their email addresses, I have not received a personal reply (only the usual automated messages regarding high enquiry volumes). It is now 7 working days later and still no word.<br> <br> This is happening against the background of another episode of poor service delivery during 2***. I had sold my car to Audi Sandton, where I subsequently purchased another Audi. The original vehicle was fitted with a Skytrax system and I required Tracker to remove it and reinstall it in the new vehicle. It took them 8 MONTHS to sort out the transfer. During this period debit orders were still deducted from my account for a service they were not providing. I have also not been refunded the money despite requests to this effect.<br> <br> I am very disappointed...