Cancelled services

I just purchased a new car and someone from b sure called me and advced me on the cheapeast insurance, after evaluating the insurance given whic was Anderson, i wasnt happy with the services and i immidiately cancelled their service, but the compaby b sure still went onto my account and debited R950.00 last months after i cancelled, again on the 30th of September they went again and debited R1050.00 on my account. As a consimer i have a right to cancel if im not happy and not pay for the services i didnt utilise. For the mere fact that they can go onto my account and take what ever amount they want, that is not acceptable.Its ***** and its *******.