Dial Direct worst service ever

I cancelled my policy on the 21 September 2015 and told them to cancel everything. I had a look at my bank statement and dial direct has still been debiting my account R99. I phoned the Value Added Products Department and they claim that the value added product is separate from the main policy and I had to cancel it separately. This is not true because why didn't I get a separate policy number then? I have dial direct documents stating that the value added product is under my policy number and I have a document which states that instructed them to close my policy which means that everything should of been cancelled because everything is under the same policy number. I would like my money back.