I went to board an American Airlines flight from Dallas to Maui on Jan 17 with a first class boarding pass (which had been issued in West Palm Beach when I checked in that flight - seat 7A) and was told my seat was broken and I would have to move to a middle economy seat. The gate agent explained that it was my bad luck - too bad so sad that it was MY seat and there was nothing they could do. I was flying on a paid ticket, no points or upgrade. I wasn’t happy but I get these things can happen however, upon boarding the aircraft I went to seat 7A and there was a man sitting in that seat. Turns out, it wasn’t my assigned seat that was broken but his. In this day and age it is hard to believe that this type of blatant discrimination still occurs. American Airlines solution was a $280 refund, I was in Maui for 5 days of golf, 2 of which I ended up spending in bed due to back spasms caused by the flight. I had no medication with me on the flight as this situation was totally unforeseen. I understand that seats aren’t necessarily guaranteed but to lie to my face in order to accommodate another passenger in unacceptable.