I used to Trivago to find a motel in Orlando Fla to watch my son participate in the parade at Disney. The site EasytoBook had a room and a great price. I made the booking. When we arrived at the motel at 1100 pm no reservation. It was a Quality Inn and they really bent over backward trying to find the reservation. It could not be found and they were booked. I called EasytoBook and joined the electronic shuffle. Meanwhile we tried to find other rooms at other motels. There was nothing available. It was a busy week at Disney. We called over 22 motels no rooms. It turned out EasytoBook was using a sub vendor located in a place far far away. They were no help.
We finally found a room that was, lets say, quite a bit more costly over the original room. We had no choice. We stayed 3 nights.
I submitted a claim to EasytoBook with a written story, excel spreadsheet documenting cost, and a copy of the receipts. After over 2 months they offered me a $100 refund. That did not come even close to paying for the bathroom space at our new motel.
I emailed Trivago and asked for their help. They put pressure on EasytoBook. It still took another 2 months before I got a very generous refund from EasytoBook. The Trivago customer service representative kept after EasytoBook and would not take no for an answer. Trivago kept me informed of the status.
I firmly believe that if Trivago had not intervened I would still be waiting for my refund.