Tracker lack of Ownership

Cancelled a Tracker contract around 2 years ago. My car battery keeps going flat. Replaced the battery and same issue. We then found that the Tracker is causing this. I have now been trying for over a year to get the unit removed. Tracker call centre keeps bouncing me back and forth between bookings and retention desk Ultimately refusing to assist to remove stating "removing of tracking units is not in our policy " I am willing to pay for this service but Tracker refuses to remove it nor refer me to an installer. Again, stating that "our installers work on bookings only for installations." It is extremely frustrating with a very poor customer experience center