Horrible Failure by American Airlines...

In my experience, there was an overall failure to provide quality service for flight 661 to Ontario, California on 4/26/09.

The details included:
-None of the information screens at the airport listed anything about this flight.
-When asking at other gates for information about where this flight was leaving from, I was given 2 different answers.
-No gate attendants even showed up at the gate until 5 minutes before boarding was supposed to begin.
-I came to find out that the pilot for the flight was called only 15 minutes before boarding was supposed to begin.
-Very little information was offered to the passengers waiting for boarding.
-We were first told that the delays were due to the catering, but later the agent announced that it was due to an earlier international flight. Then the pilot announced on the intercom on the plane that the whole crew was called late for the flight, as if the crew for this flight was just an afterthought, and that was the cause for the delay. Which was it? It would be nice to have been extended the courtesy of a straight answer.
-While boarding, the gate manager at D21 required that I check my bag, the very same bag that I have used for over 100,000 miles of flights with American over the past year. And on top of that I was treated rudely by both him and the other gate attendants. My bag fits in the overhead, and it fit in the tester, but these AA employees saw fit to embarrass me in front of the 120 people waiting to board.
-Also while boarding, I noticed that one of the flight attendants was stuffing a bag much larger than mine into the overhead.
-While pulling out of the gate, the plane experienced a problem with an alternator on the left engine which ultimately grounded the plane resulting in the entire plane being emptied and passengers having to trek across to the other side of the airport after another plane was located.
-After leaving the first plane, I asked the gate attendant to retrieve my bag (which they forced me to gate-check), just in case the flight would be cancelled, since we were told that was a real possibility. It took the gate supervisor, David, over thirty minutes to locate my bag and get it to me, which almost resulted in me missing the new plane.
-When I got my bag to the new gate, I was not asked to gate-check it, because it clearly fits in the overhead bin, as it always has over the last 100,000+ miles traveled with AA.

Overall I am extremely disappointed and dissatisfied in the lack of service provided by the AA gate employees in regard to this flight, and I am lodging a formal complaint. I am surprised at the total lack of respect and dignity offered me, considering the amount of time I spend traveling with AA. Had this been my first experience with American Airlines, I would avoid this carrier at all costs. I would hope American Airlines would instill in their employees a greater appreciation for their customers.