Tracker *****ing my money - ********* behaviour!

I sold my car 2 months ago and purchased a new one and was contacted by one of your consultants about the cancellation of the contract and start of another. <br> <br> I was advised of a cancellation fee of R800. On March & April 1st I was debited R418 which I thought was my current fee and a portion of the cancellation fee - as I was not advised further about the R800, when/where to deposit it etc.<br> <br> When I called in for another query today I was advised that both contracts are still active and no note of cancellation has been made. I was told that it was my error to not have advised Tracker of the changes - Tracker was well aware of the sale as we even discussed the transferral of my old car's unit to the new car! <br> <br> I was then advised that I will STILL be debited again at the end of this and next month because I did not advise Tracker of the change. Why was I not told any of this when they called to confirm the new contract? I requested that the call be pulled and was told it takes 5 - 7 working days which I find unacceptable for such an urgent matter.Are you charging both me and the new owner for the Tracker in my old car?Is the new owner getting a free ride at my expense? Fix this.