Let me explain to you how buying something works. Unless you have actually paid for it, that means forked over the money it costs, that thing doesn't actually belong to you. Just because the cashier has scanned it, doesn't mean you have paid for it, and therefore, it's still not yours. When the cashier tells you to wait until you have paid for the merchandise to open it, the polite thing to do is wait the five seconds it takes and actually pay for the thing. You don't say, "you already scanned it!" then wave your debit card around in my face. I'm sorry, but I'm not some machine that can magically devine the balance of your bank account by seeing your debit card, and at the store I work, a lot of people try to pay with debit and end up having insufficient funds. I wasn't being "extremely rude" to you just because I asked you to wait, and to make a big deal out of it in front of your children and the other customers, and then just continuing to open the stuff that's not yours just shows what kind of a person you are. Food items cannot be put back on the shelf if they are opened and if hadn't been able to pay for it, that would have robbed the company of the money that item costs. Next time, please don't be so impatient and hostile. You acted like a child. —Can't Wait Until I Graduate So I Can Get a Real Job