Can't stop a contract, on a sold car

I sold my car nine months ago, and I'm still unable to stop the contract, Cartrack reckons I need to pay the full price of the service, until the contract matures.<br> <br> I'm more than willing to pay what I still owe on the unit, but how can I pay for a service that they don't,and haven't rendered for the last nine months?<br> <br> Cartrack know this, I will wait until my contract matures, but I will never be a client again, and I will discourage everyone I know to become a client.<br> <br> But, good job you made a 1000 bucks.