"Excuse me, you forgot my bread".
Bread? Two Dollars extra!
I think the SN felt that George was trying to show him up by saying he 'forgot the bread'. Careless choice of words by George.
I often wonder what to do if you find the Nazi made a mistake, like giving you Mulligatawny instead of Crab Bisque. I think you just take what you get and be thankful for it. It's more of a privilege than a right to get your order right.