Hey , If it was that bad, you can always call your bank/credit card company and get the charges reversed, you can tell them you did authorize the rest of the stays and you only stay only 3 days. They can reverse the charges since you didn't legally stay those extra nights, you are not out that money. I have done this several times because of issues/ hotels etc. Give it a try.

I will never use Expedia again. After a flight time change, never having been notified by Expedia, I complained to them and it was MY fault. Expedia does not admit responsibility in anything. But they gave me vouchers to use later, and whaddya know? When the time came to redeem them, they would not honor them. I hate Expedia!

Hi David,
Well here's the deal with Expedia and the other travel sites. If you booked through the Expedia site and did a prepaid reservation for 6 nights you actually paid Expedia not the hotel. In turn Expedia pays the hotel on one of their company cards a rate less than what you paid Expedia - this is why 1. you will not get a receipt from the hotel - it isn't your receipt it is Expedia's receipt (your receipt is technically your credit card statement showing the billing from Expedia and/or the emailed confirmation from Expedia that shows how much your credit card was charged and where you went, how long your stay was booked for, etc.) 2. The hotel cannot issue a refund for unused nights because they are basically dealing with Expedia not you. I don't think you will win this one by submitting a claim to your credit card company because the sites like Expedia specifically state that you cannot cancel or get a refund for unused nights.
If you book your overnight accomodations with the hotel directly then you have more of an opportunity to check out early if your business finishes ahead of schedule and you will be able to get a receipt from the hotel because you dealt directly with them.

The problem isn't the hotel it was expedia, orbitz or whatever site you used...you can't get a refund when you prepay the room through those sites. Also, you don't get a receipt because the expedia pays 70 for the room but charged you 100 and don't want you to know....i worked at a hotel before

And if you were travelling on official government business, you should have been using the approved travel agent. Had you done that, you would not have had to fight with an on-line agent. And as stated in another response, they put everything out there for you and it's not even in small print! You actually have to check a box stating you read their terms before you can complete the purchase. Bad on you if you didn't. Keep us posted if they do give you a refund. My guess is all the agencies you filed grievence with are laughing with the rest of us.