Being billed for car I dont have.

I am so defeated with Cartrack and their service. I have been harassed every single day with calls, emails and whatsapp messages for God knows what. I told the their agents numerous times that I no longer even have the car, they have to close my account because im not going to pay for a car that I do not even know where it is. And no one has assisted me for that, instead I keep being transferre from department to department and still getting billed and harassed for payment. If you care about your peace of mind, dont make the mistake of doing business with this company, you will regret it, as much as I regret it right now. PLEASE CARTRACK, FOR THE LAST TIME: CLOSE MY ACCOUNT AND LEAVE ME ALONE.