I believe cc doesn't pm websites. But, if the price at walmart b&m is the same as on the walmart website, then take in the website printout. If they say they won't pm it because it's from the website, tell them it's the same price instore. And if they don't believe you, tell them they can call walmart to check.
So if the b&m price is the same as the website..it should work. But might not, just because sometimes the csr's are asses about pming.