Where are my pennies?

I went to KFC yesterday to buy one of those little strawberry shortcake cups. I gave the cashier two dollars and I got two quarters back in change. Here is my receipt:




Now My question is what happened to my four pennies?

This happened once before that some cashier kid kept my pennies but I don't remember what store it was. These kids are scamming people and I'm going to keep my eyes open. I don't go there often but if I do and it happens again I'm taking this to the Colonel.