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!