While I'm sure many of them actually are sold out (and yours might be by now), if anyone else lives near a Wal-Mart make sure to not just call but go by the store and look around.

At mine, they had moved them from their original place to another display on the other side of department, and as I walked up behind a couple of employees I overheard one telling the other that they'd been telling everyone who called or asked that they were sold out (in an attempt to ensure there were a few left to buy at the end of the day I assume). They had a stack left.