My husband had a nasty cold and the self scan he was using we later found out should have had an out of order sign on it. After missing the fact that it wasn't dinging for every item because he couldn't hear well, they pulled him and had him arrested. His total was off by $100 and he should've realized it, admittedly, but he just wanted to get home. We were able to get them to drop the charges because the self check out was malfunctioning but he's still banned from Walmart.