Terrible customer service

Worst customer service ever. DO NOT DO IT!!! I've used other tracking companies and have never experienced what Cartrack is doing. They debit your account even when their unit has been faulty for months. Debit on dates you did authorise. Their service is appalling. After months of complaints and queries, your matters do not get resolve. All they just do is take your money. They never answer calls and when they do, they put you on hold without end and then they transfer you from pillar to post where you just end up explaining yourself over and over again. You do not deal with one person and over many different people contact you from different departments. Their accounts department is quick to cash in. I've wanted to cancel with them and still nothing apart from debiting my account for a service they are not providing. The unit is faulty, so how will they recover my vehicle. I'm really tired and frustrated. I can't do this anymore. There is no reference for their calls or emails just automated responses. I've called. I've emailed.