It scanned their cards, it just wouldn’t show how much was stored on their cards. I’m not sure if anyone has determined who is on the hook for the charges.
The person who bought the food
The government who’s system wasn’t working
Or Walmart
Walmart issued the order for the store to accept the cards knowing that they might be already overdrawn.
I think Wal-Mart is probably going to have to eat it. Maybe they won’t do it again next time.
You are “on the hook”.