Bought a parka at Hudson Bay, it was $48. Handed the teller a $50 which put in the till and gave me change for a $100. I told her that’s wrong. She lost it “you trying to tell me my job” she barked. No I said took the receipt the $52 in change and the parka and went home smiling. Liked to have saw her face at cash out time.
Similar thing happened to me at McDonald's once. Gave the cashier a $10 bill and got change for a $20. I told her I just gave her $10 but she insisted I gave her $20.