Tracking device not yet installed in new vehicle.

I bought a new bakkie late in May. I informed Cartrack about this. They promised to remove the tracking device from the old bakkie to install in the new one. It is now November and this has not happened yet. After numerous calls and emails AND them deducting the full amount every month. The customer service is terrible. Every time I contact them they make the same empty promises. I am at the point where I want to cancel my subscription and move on to a new company. I am not even sure whether the old bakkie is still there and has not been sold yet. I am not happy at all.