Cartrawill trap you in a non existent contract

Zero rating for car track. since I sold my car and cancelled my contract, car track refuses to cancel the contract and continues to charge for the service I am not getting. I tried calling the and every time the send me from pillar to post. I requested requested the contract recordings and car track never response. the only time they respond is when the demand payment which is not due to them. Even after the Hello Peter review they never bother to correct. Very very bad service.