This exactly. It's important to act fairly. That's pretty much all anyone wants. I once had a fat cashier short change me a dollar. I give back the money and show the receipt. She fumbles and then gives me back two EXTRA dollars instead. Again, I tell her the correct change on the receipt. She knew the amount but couldn't figure out which coins to use. I stared as she feebly counted out the change until the butterstroke clouded her eyes. Eventually the manager had to step in. I just want what's mine, no more and no less.