Our education system is failing bad. In the past few years I have ignored most of the cashiers dumb mistakes, but I do have to rant on this one. I was in Canadian Tire today, and the total came to $212.68. I checked through my change, and coincidentally I had a twonie, two quarters, a dime, and two nickles. I handed this along with five fifties to the cashier. I always pay in cash at CT because of that great CT money you get back. I remember the day when it was 6%, I also remember complaining in the 1980's when they cut it to 3%, today I got back 75¢ (but that is a different rant).
Anyway, she looks at the change and says I don't need it because I already had enough. I point out that it make $250.70, and I would get back two twenties. Confused, she pushes the buttons and puts the money in the drawer. She gives me a $30 gift card (some promotion they are currently running, expires in a week or so). She closes the drawer without giving me the change. I point out she owes me $40, and she still looks confused. She looks around for help. Finally she looks at the bill and sees that yes indeed the computer got it right, and gives me the $40 along with CT money she also forgot.
To be fair, I have even had some older cashiers get confused, but this young lady takes the cake.