A mess of a company

I had one car on cartrack and never had issues for nearly 5 years, then I add 3 cars, now cartrack debit me double whenever they feel like add items on my contract without my consent or full explanation, every time I call to ask it's different story, to date am still waiting for a recording. Am giving you a week to sort this out, if you don't am going to cancel my contract and report you to consumer ombudsman, and am not going to pay any contract Cancellation as you are bullying me because you have access to my account for debit