Can’t Vouch For You On Sundays

(Please note I am a young worker, whilst the patron is an elderly lady with her daughter; both appear angry. It is a sunny Sunday afternoon.)

Customer: “Coffee, and this voucher.”

(Hands over a voucher for a free cup of coffee, not valid on Sundays, which is clearly stated on the back.)

Myself: “I’m awfully sorry, ma’am, but this voucher isn’t available on Sundays.”

Customer: “Well, then, you are breaking the law!”

Myself: *unsure how to respond* “I’m sorry?”

Customer: *points to dates that voucher is available, next to where it states not on Sundays* “YOU have put the dates here and YOU are breaking the law by not allowing it!”

Myself: “Sorry that you feel that way. Anything else for you?”

Customer: “This is illegal! BREAKING THE LAW!”

(The customer then proceeded through the transaction with a death-stare at me the whole time whilst I smiled back!)