We were planning a trip to Europe traveling from Geneva to Paris. It included a stay for two nights at a Hilton in Strasbourg. I made the reservation - there was a good AAA rate and I took it (or so I thought). We had to cancel the trip and when I went to the Hilton site to cancel, I discovered that the reservation was for a non-refundable Advance Purchase. And sure enough, I checked and saw my credit card had been charged. Called the Diamond Line and they transfered me to another department. There I was told they would contact the hotel but it was at the hotel's disgression. Now I have not mentioned that this happened at the end of January for a mid-September stay. Got an email from the manager of the hotel who basically said - too bad. I wrote but a strong, firm letter (not offensive or insulting) that basically said that I made a mistake, thought I had signed up for a different rate, it was seven months away, cost the hotel nothing and that I was offended to think this is how they would treat any customer, much less a Diamond! Got a letter back saying I was right and that my credit card had already been credited. Wow - that was easy. While I was pleased that the hotel relented and understood that is was a simple mistake, I was disappointed that the Diamond department wanted no part of my problem or was not willing to help in any way.