Service is very poor, you always talk to a different person when you have a problem and they don't keep notes

Service is very poor, you always talk to a different person when you have a problem and they don't keep notes. They can't track my car and im tired of calling and driving to their technicians who are *********** to fix my tracker. I want to cancel because im paying for service i don't get and they say i must pay for cancelation fee. When i call to ask where is my car, they can't even tell. But i must keep on paying because its a contract.