21. “Get Out Of My Store”

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I work in an ice cream shop, and one day a man ordered a shake, drank the whole thing, and then demanded a refund because he claimed the whipped cream tasted sour (which is impossible because we make it in-house every day).
My manager (a 53-year-old Indian man) proceeded to take the cup from him, grabbed a spoon, and ate the whipped cream right out of the cup, and said, “It tastes fine to me, get out of my store.”
Maybe it was a little overkill, but it was one way to deal with it.