Disgusting Service

I recently fitted a Skytrax tracking unit in my car. The installation was in error which caused the ECU on my car to fail. After tests concluded by VW, they advised that a fitted electronic item was draining the battery and backfeeding power to the ECU not rendering the unit damaged. I called Tracker to have the unit disabled in the car which has been at VW since Monday. I called Ashwyn at the Tracker CC on Wednesday, today is Friday and they are still scheduling to remove their faulty equipment. I asked to speak to a Supervisor and was told she was not available. They were quick to have the unit installed but now that I request them to disable the unit so the car can be repaired, they make me beg them for their service. I require someone from their technical team to go out to disable the unit by 12h00 today else I will have it removed myself and will cancell the service with them for their *********** after sales service. What will happen when my car is ******, will the service be the same? Angry, frustrated and inconvenienced is little to describve how I feel by taking up their product.