Hotwire.com Review

I was on Hotwire's site and evidently ordered airline tickets by mistake (although I swear I never got a screen that said I'd made a purchase).  When I got an email saying that I now owned two tickets, I immediately called Hotwire's customer service line.  That was just the beginning of a long and tedious story that I'll skip the details of, but that ends with me out $400 with no recourse.  If the American Express statement said "Hotwire" I'd appeal it, and I think I'd have a good chance of prevailing, but the way Hotwire works, the statement is from Delta, and I have no beef with Delta -- quite the contrary.  They were as helpful and sympathetic as could be.  Hotwire, on the other hand, wasn't even polite, much less sympathetic, and forget about helpful.  I will never, ever deal with them again, and I am writing this with the hope that I'll save someone else the grief.