I flew AUS to SAN last week via DEN. Even though I switched aircraft in DEN, the flight number was the same. I did not get an upgrade from AUS to DEN, so the result was that I was not even placed on the upgrade list from DEN to SAN. I noticed this the night before, and spent about 15 minutes on the phone with a rep. They said they would address it. By the time I arrived in Denver, it still wasn't addressed, so I spoke to the people at the United Club there. They couldn't figure it out, so they called another agent. I then spoke with the gate agent who also happened to be a supervisor. She said based on my platinum status I should've been upgraded, because she had just upgraded a gold a few minutes earlier at the gate. She said United knew there was a problem with "through flights," but they had not yet come up with a fix. She said to call 1800 We Care 2. I thought good luck with that.

When I arrived home, I noticed that I only got credit for one flight segment instead of the two I flew. Also the mileage for which I was given credit was way low. The Mileage Plus people said they were sorry, they knew about this glitch also, but they don't know if it happens until someone complains. Further, they said I would only get one elite qualifying point even though I was on two separate flights, again because the two separate flights shared the same flight number.

This is frustatrating. Anybody else have this happen?