rip-off and plain outragious dishonesty, sounds to me like an honest mistake. I handle cash everyday and had a guy come in Monday claiming I gave him change for a $10 and insisted he gave me a $20, after openning my drawer(with the paln of giving him a $10 bill) I realised I didn't have a $20 in my drawer yet! It was at that point he remembered he had put $10 worth of gas in his truck on the way to work that morning and forgot he did it! Again, just an honest mistake!
The man who coined the phrase "Money can't buy happiness", never bought himself a good fly rod!