Attorney threats

So, Cartrack has handed my account to their Attorneys for refusal of payment. I refused to pay for a service that I don't utilise. I've sent numerous emails requesting an installation on my new car as the previous one was involved in an accident and declared a write off. In my request, Cartrack said they need to uninstall from the previous car to install the same unit on the new car. No problem in that, but who's gonna look for that wrecked car? Last time I checked it got put up for auction and ended up somewhere in the Western Cape, I live in North West. These companies don't care when it's time for them to pull through.