Removal of the tracker

I canceled my netstar tracker few months ago while my car was at the panel beaters. I picked up my car in July 2023.i then installed a new tracker, forgetting that I still had the netstar tracker. I then sent them an email to come and remove it and all I received was automated responses. It's been 7 days and no response from anyone there. This is poor customer service on their part because of informed them the two trackers are draining my battery. I urgently need netstar s assistance please