Horrible service ever

I've been calling cartrack for the past week just to do a simple thing as I told them that I've sold the vehicle and they need to remove the device from it and install it to my new vehicle and charged me R800 that will be debited with my monthly premium but now no one I doing what we agreed on. Today I called them because the guy I sold the vehicle to wants to sell the car and they haven't remove the device. I ask to speak to their team leader at the rescheduling department and he promised to call me in 30 minutes but past 3 hours didn't bother calling me he just decided to go on lunch by the time I call again and I ask the guy by the name of Lesego on the same useless department he promised to get the technician and get it sorted up until now nothing is resolved what a horrible and *********** service we get from car what will happen if the car get ****** are we going to be given run around like this. The funny part this is not a free service or charity case I PAY EVERY MONTH FOR CARTRACK TO GIVE ME WHAT I DESERVE.