Useless and Rude Company

I purchased a Kia Cerato Koup in 2016. With this purchase i was given a free tracking device in the vehicle. This vehicle was sold in June 2018. Upon selling of the vehicle i called and mentioned i was selling the vehicle. I requested if i could move this unit to my new car. I was told by the consultant that this could not be done and i had to fit a new unit. The price was not palatable so i did not proceed with this. I mentioned that the vehicle was being sold. The consultant requested information on who the vehicle was being sold to and the sales representative so that they could arrange collection of this unit. All this information was provided to the consultant. I have suddenly received an email stating that my account is in arrears as the last 6 months i have not paid my services. They never had my account details and no one has ever contacted me informing me of this. Lerato Dlamini from their legal department has absolutely no customer service experience, manners or even knowledge on how to deal with a customer. I am very irate at the moment. And said i am liable for this amount and put me through to cancellations. Cancellations asked if i have received any calls informing of this. I never received any calls. Cancellations department actually knows how to deal with a customer and has customer service experience. They were going to escalate this matter. I would like this matter resolved else i will take this matter further legally and expose the type of service being offered by telematics.