Not intendeing to "dis" your thread:
I have NEVER had a problem with United Air Lines in thrity years of travel.
May I, most humblily suggest - your luggage is mis-marked....or hast direting (travelor souvenier free-fees) stickers attached take one, or mosre off and place it in your albumne or the programs
Run lean and Run Clean if you are a transfer through multiple international zones.
Sincerely,
Gargoyle