Had 1A, sent to 6D and told either take that seat or get another flight (1D was available - I preferred a window (reverse herringbone 1-2-1 config, so more private) but none were available.
This only came about as the doors had closed and we were getting ready to go, I then questioned whether I could get an amenity kit and menu as didn't seem to have one waiting for me. From that many things ensued..... CSM then came over, told me I was a liar and I did not have that seat. I produced my BP and mentioned I preallocated it many months ago. Continued to be told I was a liar and told me to move.
A few minutes later the FA actually serving my part of the cabin came back and said it was a mistake, I was right and to stay in 1A.
Then a few minutes later..... CSM came back again and asked why I hadn't moved. I asked where I was expected to move to - 6D I was told. Anyway, a minor heated discussion occurred and I then gave in and picked up my things to move to 6D. Well, 6D doesn't exist on the plane. My now my temper was getting very difficult to contain - let me tell you! Turned around and noted that I was not impressed with the treatment, especially being told to move or else as well as being called a liar. I was then told I could sit in 1D so moved there (wife was in 3A).
Anyway, shortly after all this happened the door had opened again and the station manager came onboard to apologise to the way the CSM spoke to me, etc. and offered me AA miles as a way of saying sorry. Said they'd post in 48-72 hours, however nothing has posted yet. Will give it a few days before putting something over to AA. I should do it anyway, as the CSM has no place to call a passenger a liar regardless of what they think. I took a photo of my BP for keepsake too, you know, just to prove again that I was right I had 1A as MY seat