The Detergent Price Deterrent

I never believed these people existed until I encountered one myself. 

A gentleman came up to my register, buying a roughly $17 pack of dishwasher pods plus other odds and ends, and handed me a coupon for $2.50 off the dishwasher detergent. I scanned the coupon, and the $2.50 came off with no problems so far. After I complete the transaction and hand him his receipt, he looks it over, as some customers do, and finds a problem.

Customer: “The dishwasher detergent is the wrong price. The coupon was for $2.50 total price!”

I had not put the coupon in my till yet, so I showed him.

Me: “Sir, it was $2.50 off the detergent.”

After a few minutes of me trying to explain, he seems to understand and leaves, but is back moments later because:

Customer: “The coupon should have been $2.50 total! I want to return the detergent!”

At this point, I direct him toward customer service because I can’t complete returns on my till. Thank goodness he didn’t want the coupon back because that, I couldn’t do.