Wooohoo, I dropped by today and explained what happened and the manager said she'd let me drop by and pickup another box o' paper when I have my reciept with me. At first the girl at the counter was saying "Sorry, sir, once you pay for it, it's your problem! It's your responsibility to make sure you've got everything with you." Which to a point is true, but I've gone many times where the cashires have forgotten to give me stuff like a phone card and I have to ask for it as I was walking away.
Anyway, one of the many reasons I love Sam's.