Yea, after a pilot on American Air almost nosed us into the tarmac at Salt Lake City, I decided to not book with them anymore, but I can identify with the horrible air trip stories. I booked Horizon and was on my way home, when we were told that our plane wasn't working and we needed to swap planes. By the way, we'd been sitting in the damned thing for an hour before they worked up the nerve to break the news. Anyway, we're told to go to a new plane, and by the time I got there it was full. So it's me and a man with his wife and daughter, and they tell us there's one more seat left!
Silly me, thinking I'd get it.
Since He was higher on 'the list' he got the seat. He argued with the lady for a bit about his wife and daughter, so I did the noble thing and stepped up saying I would take the seat, so they wouldn't be separated. Well right away the man agreed, but the lady behind the counter not only told us both no, but she did it in such a way to suggest that doing so would have made the plane go explodey. Or some such.
Anyway, my condolences, book Delta!