My wife is terribly sick - attending a training in Houston. Today is her last day at her training and she requested to leave early so that she can get on an earlier flight to come home and rest. Her original flight HOU - DFW-SFO leaves at 6:25pm (AA2870). She arrived at the gate (GATE 28) at 1pm to get on the 2:55pm (AA3390) flight on standby. Sadly, the Gate 28 agent did not show up until 2:45pm. When she requested to be on standby, the Gate 28 agent told her that her ticket was too cheap and won't let her get on. She called the booking agent American Express and told them what the Gate 28 agent said. AmEx said: that's not possible, her ticket was over $800. The Gate 28 agent: That's what's showing on my screen - she can't board - we do have 1 seat available. At this time, AmEx was trying to help get her on board with an upgrade, but AmEx showed the flight is gone (as it was already past 2:55pm) at this time. I felt so bad for my wife as there's really not much we can do. There's limited number of flights from HOU to SFO or the Bay Area. Now she's suffering at HOU at this very moment. There's probably not much I can do now, but I would like to know what you guys would do? Anything to get back at AA? at AmEx? Ways to deal with this? Thanks for any advice. SOOOO MAD now!!!