If the shoe was on the other foot, and the bank teller shorted you $20 bucks, and you didn't discover it until till you got home .... What would you do in that case ???

a) Just forget it
b) go back to the teller and see if you could get him/her to recount the drawer

I think that the answer should be the same in either case.

For $20, I'd forget it either way ....