I doubt she'll get fired from u'r complaints cause all cashiers make mistakes. I'm a cashier too and sometimes i make stupid mistakes, by doing that it's not gonna help u stop hating her anyways. Be a man and just live with it. U'r not gonna see her anymore in school or any where else, only when u go shopping at the store right.. then just don't go to that store as simple as that. Even if u do just ignore her it's not worth making all this shit up just to get back at her.. those are just immature actions.