Doesn’t Understand The Custom Part Of Customer, Part 8

Customer: “Excuse me; can I use this coupon here?”

(The coupon looks like a standard buy-one-get-one coupon, and I see that she has some of the items depicted.)

Me: “Yes, you should be able to!”

(I ring up the items, but end up having trouble with the coupon.)

Me: “Oh, I’m very sorry; I didn’t look at the coupon closely. You need to buy two [Brand] items to get these items free.”

Customer: “But I did buy them!”

Me: “Were they on the counter? I don’t think I rang any up…”

Customer: “No, I bought them at [Store next door].”

Me: *speechless*

Customer: “I have the receipt; I can show you that I’m not lying…”

Me: “No, no, that’s not… To use the coupon, you usually have to buy them in the same purchase… at the same store.”

Customer: “Are you sure? I don’t think the coupon says that.”

Me: “I don’t think they felt it needed to…”