(A guy comes into our store and slaps a 56k dial-up modem down on the counter.)

Guy: “I want to return this. I bought it a year ago and it’s broken.”

Me: “I’m sorry, but you don’t have the box, the power supply, the driver CD or the receipt. I can’t let you return it.”

Guy: “You will give me my money back, right now!”

Me: “No, I can’t do that. You need to keep the receipt for warranty claims. I have no proof you even bought that from us.”

(The conversation escalates and gets more and more heated until finally…)

Guy: “If you don’t give me back my money, I’ll be waiting for you in the car park after work and I’ll f*** you up, you hear me?! I’LL BREAK YOUR F***ING FACE YOU LITTLE S***!”

Me: “Are you threatening me?”

Guy: “No!”