It seems you've drawn the short straw re FAO's, nothing worse than having an arrogant 'Heil Hitler' type as your FAO. He's probably downtrodden at home by his Chinese wife. So he's taking out his frustrations and venting his anger on anyone at his mercy, namely laowai like you.
I think every FAO should have been abroad for a long spell first. That would help them understand how to deal with westerners, coz most FAO's here are clueless regarding that!