Tracker still charging me after cancellation

In October 201r4 my car was written off.<br> I called into Tracker to inform them that my debit needs to be stopped as I no longer have the car.<br> <br> I noticed that I was still being charged so I called again to inform that they need to stop the debit.<br> <br> I see that they are still deducting money from my account.<br> <br> Tracker needs to stop charging me for a car I no longer have and they need to refund my monies since last year.<br>