WeBuyCars does not care about you after you pay them

I bought a car from them, and they didn't disclose there was a tracker in the car from the previous owner. They suggested I install a tracker, which I did but after the tracker was installed, I was told that they (Netstar) found an active tracker and asked me to call Webuycars to get it sorted out because not only is it a safety hazard, but it is draining my battery. It has been a week of me calling and emailing webuyscars and they are dragging their feet while my car sits at home with a flat battery. The customer care center keeps saying they are going to escalate my issue, but I see very little movement and zero feedback. Very ***********!