I'm not saying that United Airlines' customer service is bad, no, it is much much worse. Anyway, here's Dave Carroll's third video about United:
Not only do they break guitars but screw passengers (families in particular) out of money ( 1x23 kg takes a lot less hold space and fuel than 8x20 kg, but the former will cost you at least 150USD ) AND they don't process I94-W forms correctly either.
If your I94-W form is handed back to you at check-in when leaving the USA, inform the CBP as soon as possible with the name of the airline,check-in person, date, flight, airport etc. I'm told that not doing this is "very bad" for the airline.
Good thing that Finnair isn't going the same way....oh wait....