I had to cancel a ticket due to sickness and got a $600 credit. I called today to use my credit and was on the phone for 2.5 hours (!), on hold most of the time, to get a new ticket. However, in order to use my credit I had to pay an additional $200. I was fine to forfeit $200 of my credit for another ticket, but to have to pay another $200 to get a $300 ticket is CRAZY. That would be $800 out of my pocket for a new ticket.
What a scam! In these times of COVID where travel plans are disrupted this is criminal in my view. I will never, ever, use Expedia again.