Cartrack=WORST CUSTOMET SERVICE

The worst customer service EVER!!! I started my contract with Cartrack around February service were excellent until 4 months ago when I traded my vehicle. First I called in to advice that I will be trading in my vehicle so my tracking unit needs to be removed.2 weeks went by and nothing happened then when I phoned in to get feedback I was advised that I need to make a payment for re and de instalation.Fine I made the payment weeks went by still no communication. Eventually the car got sold with that unit from the dealership a month went by I call in again (keep in my mind I am still making payment month after month).Then a manager advised me (Neo) that they need to do an investigation because apparently I did not inform them before i traded the vehicle and then I will have to pay the hardlocking fee of R2000 and some odd rand.Weeks and weeks went by I call in again.I am then advised that no it's not my fault I did inform beforehand they will send one of their guys to do the de-installation and will call me for re- installation. It's been 4 months I did not make a payment for October because what am I paying for and my oh my even on a Sunday while I'm in church I get called for the outstanding payment when I explain my story they drop the call.This is the worst experience ever.Managers and team leaders who promises to call you back but they don't I feel so stuck because, if I cancel this I have to pay so what am I paying for?