Collecting money after cancellation

I have taken out insurance for my vehicle with Dotsure at the start of September and they deducted two amounts of R 680.24 and R 128.00 respectively on the 6th of September. After a major fall out and poor service (I only wanted them to answer one simple question) I decided to cancel my policy on the 7th of September 2017. I even called the tracking company to cancel the fitment of the 'Device' to save you money at the end of each month for 'safe driving'. Which is actually only used to repudiate a claim and to prove that the client was wrong in event of accident or theft. Then after cancelling and receiving confirmation of the cancellation another collection was made from my account on the 26th of September for R 258.96. How wonderful is that, you have insurance for not even more than 5 days and you cancel so the insurer then decides to just deduct whenever and ho much they want without even notifying the client. No refund either after paying a full monthly subscription and only had cover for 5 days. I await a response and if none before 27/09/2017 another complaint will arise on another platform. PLAT **********