I spent three months talking to the "helpful" humans at VRBO's tech support, trying to get a refund from a stay that didn't happen due to weather. The host was great and issued the refund immediately, but VRBO wouldn't pass along the funds back to me. They kept alternating between pointing their fingers at the host and pointing their fingers at Expedia (who was involved in the transaction for reasons I still don't understand). When out of options, I took to trashing them all over social media and review sites, and then all of a sudden I got contacted by a part of their customer support org who seem to be able to do things. Finally, out of nowhere the refund quietly showed up on my credit card statement.

Awful experience, and I've sworn them off ever since. Very stereotypical "friendly but can't do anything" human customer support.