I've heard nothing but bad news regarding refunds with Orbitz/Expedia/Travelocity. It's the usual story - poorly trained reps who don't have any power to do anything, who will tell you to wait 10 days and hope that the computers sort everything out. My advice is to stop calling, wait the 72 hours, and if you don't get what you're looking for, call the credit card company and dispute the charges. That's what we pay credit card companies for.