The Worst Customer I Ever Had to Deal With...EVER!

[Crow The Robot]

You could have adoted a deep Southern belle accent " How Dare you call me a Yankee? I am NOT a yankee!! My Lawd!"
Seriously though what a b-tch, believing that all people from a certain nation/region are one way is a bigoted thing to do. That "lady" should have been tossed as soon as she began verbally abusing you. You handled it well, though.