I went to dinner with our guests from Japan to Ezell's Famous Chicken in Bellevue. I ordered 8 piece (half regular and half spicy) dinner and a pound of regular Chicken Tenders.
When the order came, 8 piece was all spicy. I asked the lady that I did not get any regular. She looked at the plate and and said "sorry, I will be right back" and went back. When she came back, she had 4 piece of regular chicken with her.
The was so nice and refreshing. Everybody makes mistake, the important thing is that you can handle the mistake quickly to rectify the situation. Ezell's did it so well all my guests were really impressed.