Stay in school, learn how to balance a checkbook!

Pop superstar Rihanna, whose music and touring generate millions in revenue, is only worth $20,000, according to reports. The young singer recently fired her business manager Patricia Williams after discovering the paltry amount.

Williams, however, is shirking responsibility and claims Rihanna's label Def Jam and manager Marc Jordan are to blame for the singer's financial woes.

"It's not my fault that she only has $20,000 to her name," Williams tells Blackarazzi.com. "I'm a professional Business Manager, I have a staff of more than a dozen, I have worked for many high-profile actors, musicians and multi-million dollar corporations. Why would I steal from Rihanna? I showed her all the paperwork and tried to explain to her the circumstances but she wouldn't listen.

"She called me all sorts of horrible names and stormed off. I now feel compelled to share with the world the background story as I will not allow my name to be slandered."

According to Williams, Def Jam has underfunded Rihanna, despite huge sales of her breakthrough single Umbrella and her third album Good Girl Gone Bad.

"Def Jam doesn't fund Rihanna properly, so Marc uses the money Rihanna makes from third-party endorsements and from tours to fund her album and music videos," Williams claims. "I don't want to disrespect Marc's name. He is a fantastic manager and genuinely believes in Rihanna.

"But he uses her money to fund her future projects because he believes he can break her in the world market."

Williams continues to shift focus to the popstar's manager and says Rihanna's sales are not as good as some might think.

"Her album sales are not nearly as close to her single sales and he knows that if she is only known as a singles artist she will only be as good as her last hit. Unfortunately, he didn't inform his client and I'm receiving the brunt of it."