Matrix billing even after contract has been cancelled

Been trying to cancel the contract for years and even paid settlement amount twice already, and even reported the company to hello peter of which matrix people called and indicated they will sort out there issue. Here is another month, and another bill has come, for vehicle which i have not had for 3 years! For peace of mind, use other companies because matrixs will probably not be available if your car gets lost (i mean they cant do simple admin). Good luck in trying to get to matrix admin people.