Chris BrownSinger Chris Brown, who pleaded guilty to the felony assault of former girlfriend Rihanna earlier this year, continues to complain via Twitter about being "blackballed" by retail stores who, in his opinion, aren't stocking or allowing his new album, 'Graffiti,' enough display space.

"Just was at Walmart in Wallingford CT, 844 north colony," the singer tweeted. "The[y] didn't even have my album in the back ... not on shelves, saw for myself."

Brown claims to have discussed the issue with the store's management, but "they didn't even know anything. Wow!!! But they had Alicia Keys album ready for release for this Tuesday comin ... the manager told me that when there are new releases it's mandatory to put em on the shelves ... BUT NO SIGN OF #GRAFFITI. BS."

While Brown rages against the music industry, a Walmart worker who met him on the day in question claims the situation is quite the opposite. "We're sold out of it," Walmart sales associate Gerald Blodgett told MTV. "We did have it in stock, but we sold out completely as soon as it hit the shelves."

"I'm tired of this s---," the singer previously tweeted on Friday. "Major stores are blackballing my CD. Not stockin the shelves and lying to customers. What the f--- do I gotta do...I'm not biting my tongue about s--- else ... the industry can kiss my a--."

Though reps for Brown and his label, Jive Records, have declined to comment on the Walmart situation, fans have jumped on the Brown bandwagon, taking photos of his album on shelves and encouraging sales via Twitter trending topic#graffitionracks.

Brown's new album 'Graffiti' is in (some) stores now.