We had a holiday booked to Malta with Portland. We unfortunately had to cancel owing to having to shell out for a new boiler. We cancelled by phone and because we paid a low deposit had to pay £160 to cancel, which we did. I have had no confirmation in writing of our cancellation, even though we were told we would receive one. We cancelled about a month ago. I have phoned them again - a week ago, and was told they would put it in the post immediately, but still not received it. What else can I do?