I usually don't take time to write reviews but the customer service is so horrible, I had to make a note to try and save people the incredible frustration I've experienced.
I needed to change a flight that I had booked when I arrived at the airport. I talked to 7 different support reps from 10am to 4pm. Hours and hours on the phone. Finally at 230pm, I finally got someone get it fixed and get me on a flight at 5PM. I go back to the airline desk and they double check and nothing, I'm not booked. Not only that, the last flight of the day is now sold out and the open flight is Sunday.
To make matters worse, I now call to get a flight credit and Expedia tells me that no refund will be issued because the flight left at 1045am. Just unbelievable!
This is only one experience. I've similar issues in trying to extend/modify hotel stays.