I was able to contact a representative from APG IET in France and got the same answer- Expedia is not willing to get the refund from APG.I want to toss out one more thought. If you are not too far upstate, and you chose to go the small claims court route (which I would only do after trying DOT, the company contacts we list, and Chris), you might want to consider suing both Expedia and APG IET in one case. As best as I can determine, APG IET has an office in Manhattan. I cannot figure out their corporate ownership though, but perhaps our travel agent commentators know the answer. Whether you can sue them both in one case in Manhattan is something I'd ask the folks at the local small claims court: http://www.nycourts.gov/courts/nyc/smallclaims/startingcase.shtml
And here's a link to APG IET's web page, if you don't have it. https://www.apgiet.com/usa.html Perhaps that's even a new phone number to pursue.