Terrible service

I was with Tracker and then i cancelled my contract they told me to cancel my extra policy that i had. have called 4 or 5 times to cancel that policy , they told me it will be cancelled. Believe it they took the money of my account, every time i call the call Centre i get told a different story. This is unacceptable how many people do they take money from per month. I want this to be cancelled immediately and i want a conformation letter sent to me.