Whether this is a new policy or not (they claimed its been like this), I've never seen it. In fact the following experience has taken place before and this didn't happen.
While shopping, I came across a mis-priced item. It was meant to be under that label as there were 6 of them on that peg and the label named that item with that price. We got to the register and they said they'd honor the incorrect price only once (one item).
Despite all 6 being labeled that price; incorrect or not. Apparently WalMart, so concerned about its customers, won't invest in upping its game and properly arranging its stores, but it will instead screw over those very same customers.
Reviewer is in unhappy mood. Please immediately contact the author of this review to discuss pricing issue of walmart customer care. Walmart needs to read this review and look into the issue (if any) according to poster's claims.
Other people also mentioned walmart customer care in their reviews. You may find this information helpful for further shopping at Walmart. You can also consider other company suggested by the author: Target.