I hate to say it, but US doesn't care about their customers.
Write to
[email protected] if you want, you'll get a form letter reply with a voucher and a half-hearted apology which may or may not vaguely address your concerns. And it will make you even more aggrivated than you already are as you'll get the feeling that you just wasted an hour of your life trying to affect positive change in an organization that is so resistant to it.
Calling their 800 number (download their contract of carriage, it's in there) will just make you more frustrated.
The "new" USAirways fails at customer service in every conceivable way.
I hope I'm wrong, I hope they've changed. But I doubt it.