Doesn’t Have A Membership To Mensa

Customer: “Hi, I just need a refill on my iced coffee.”

Me: “Okay, no problem. With your cup discount, it comes to forty-three cents.”

Customer: “What? No one else charges me for a refill.”

Me: “I’m sorry, ma’am. Unless you have a membership card, I have to charge you for a refill.”

Customer: “Really? Is [Manager] here? Anyone other than you?”

Me: “No, ma’am, just me today.”

Customer: “I don’t have any cash. You’re really going to make me put forty-three cents on my card? Really? This is ridiculous. No one else charges me for a refill. Ever. I will be speaking to your manager about this.” *Finishes the transaction* “I mean, here’s my stupid card.”

She pulls a membership card from her wallet. 

Me: “Ma’am, that’s the membership card I was talking about. It gets you free refills.”

Customer: “Then why did you charge me?”