I was at Auto and General, my premium whent up and I found a better premium with company x. I

I was at Auto and General, my premium whent up and I found a better premium with company x. I phoned in September to cancel my policy with Auto and General, the person who help me was helpful but never informed me that I have to cancel my added tyre and rim policy separately. This mont they debit R236 from my account. I phoned and asked why so the lady told me that it is the tyre and rim cover. I told her that I asked the person, when I cancelled my policy, if everything is of my name and he said yes. She told me then that he was supposed to informed me that I have to cancel separately. She even apologise and said there will be a refund. The next day I received a ***, they will not refund because it is my mistake. Why will the one lady then told me that he was supposed to informed me? I really think this is there fault aswell, for not informed me of the sepparat cancellation. R236 is maybe not a lot of money to them, but for me as a single parent, it's a lot. I was very happy with there service, but after this, I don't know.