Last September I took out a new policy on a cheap run around car, when I moved in October they advised me there would be an additional premium of £99. I agreed to it, they told me that they'd take the extra payment and I thought that was the end of it. In April I cancelled the policy, they told me there was nothing to pay and sent me my no claims bonus. Now they are saying that they failed to take the £99 but they will cancel all but £37 of it. I've told them that it's not my problem and its their cock up so they should swallow the loss. But I wonder if they are entitled to take the money or if its a fishing trip?