Pool war nicht sauber, durchschnittlicher Service

I have paid accommodation fee for 2 nights in advance but when I checked-in, they told me that my booking was invalid because they had terminated contract with Expedia 2 month ago! I have strongly complained and explained to them that it should not be because I had made booking just a week before arrival and accommodation fee had already been deducted from my credit card, but they have insisted that they had no booking and i would need to pay now by cash if i would like to stay. My arrival was around 19:00 and I had nowhere to go, so I had to pay extra accommodation fee to them. I have already raised this issue to Expedia. I don’t understand why this hotel is still on Expedia. Staff, facility, room, all of them are unbelievably poor.