Years ago, when money was worth something and a five pound note was enough to buy enough food to keep the two of us for a week, almost, I was given change of a tenner instead of a fiver in a shop. I wasn't sure at first, because I had had both a five and a ten in my purse, and the shop was heaving, so I didn't check until I got outside, and sure enough, there was my tenner, nestled in the back, and here was me with change for a fiver.
I did struggle with my conscience - we didn't have much money and it would have made a big difference to us - but such direct theft was totally beyond me. I wen back in, waited in the queue again and told the girl what had happened. She checked her till and my five was in with the twins.
I'm so glad I did - she actually CRIED (I know that's hard to believe, but she did). She said it would have been her job gone if the till was a fiver down, and she would have had to replace it - she was so grateful, and I was bloody glad I'd gone back. It was manic in there that day and she was rushed off her feet and had made an easy mistake.
However, hypocrite that I am, and knowing the huge profits large organisations make and how badly many of them treat their staff, and avoid their taxes, and despite two wrongs not making a right etc etc etc - as long as I knew no individual would be held accountable for the error, I would keep the bag.