That happened to me the first I did the airport. 1hr 15 minutes from 29 in the queue to 3, got bumped back to 32. I was pissed. Texted Uber to find out WTF. They were useless.
What's happened to me quite often is I get ride requests from those hotels over on the East side of the airport and I accept them thinking it's an airport request. $3.00 fare to the Safeway or something. After waiting for 45 minutes in the queue.
I have to say I like rematch, though. I've got 3 or 4 rides so far after dropping off. Kind of makes up for the hours I've waiting in the queue.