After a delay screwed up our connection and caused us to miss part of our own wedding celebration with family 13 years ago, my wife and I have since always refered to United with the tag line, "United, Go f--- yourself".
I know a lot of airlines are just as bad, but we will forever hold United in the lowest of low esteem. They have absolutely created a company culture of the worst customer service in any situation. They don't even pretend to care.