Breach of contract

On the 9th of March I spoke to Adele and she told me that I will be fully covered until the end of March for R54.70. A week after I notice that Outsurance tried and debit my account for R800.00 with out notifying me. The reason for this debit order is because their advisor advanced me incorrectly. I have been driving my car for over a week thinking I have car insurance if anything had happen to me during that week, I would have not been covered. Now Outsurance is still insisting that I pay the money, which I find extremely unfair, why should I be held liable for their mistake. This is Breach of contract and not owning up to what was advised to the client, even though Outsurance has acknowledge the mistake, they do not want to take responsibility for this.