Car track abusing clients

I was a client of car track for more than five years. This company is bad news. I had a car accident where my car was written-off. I then informed car track to cancel my subscription. Little did I know that they are cruel. They told me that I need to serve a 20 days notice. I mean in such a difficult time where I incurred a lot of expenses such as hospital costs, paying of an excess, car track still wants to exploit money from me for services that they are not rendering. They are now even creating stories that I owe them for previous months even though I have given them bank statements showing that they have been debiting my account every month. So please good people don't be a fool like me. Don't join car track and so those that already have car track please save yourself from thier abuse by canceling your subscription. The sooner the better.