idiots at gate in PIT forcibly rebooked me thru CLT, and forced me to gate-check carryon bag. Got to CLT, never made it past CLT because AA could not understand why I was in CLT instead of Wash National Reagan. Lost my bag, lost my flights, MISSED MY UNCLE'S FUNERAL ON FRIDAY, in spite of telling EVERY SINGLE PERSON at AA that I was travelling to SAV for my uncle's funeral and PLEASE check my bag only to CLT. Refused to let me board if I didn't gatecheck to SAV. Should have NEVER left PIT. NEVER FLYING AMERICAN AIRLINES AGAIN.