PAMPERED heiress Paris Hilton is the 'single busiest person on the planet and has never seen a phone bill, legal papers revealed on Friday. The socialite was forced to show documents, which revealed she earned $22m in 2006 and 2007 from promotions. But the 28-year-old is being sued for $8m by the makers of her 2006 film Pledge This, which bombed. They claim she failed to promote the picture adequately. In the movie Paris, who plays Victoria English, president of the exclusive Gamma Gamma Gamma Sorority at fictional South Beach University, was also given an executive producer credit. Asked by lawyers about her calls from the producers, she testified: 'With my phone I never know, because I lose it all the time. I probably get a new cellphone, like, every two weeks. Shown her mobile phone bill, she responded: 'Ive never seen a phone bill of mine in my life. The lawyer in the Miami case then asked Hilton if she had a diary for business meetings, and she said she uses the internet to see where she has been. 'I just press my name and Google it and see, she added. During the pre-trial hearing, her lawyer Michael Weinstein said: 'Shes the single busiest person on the planet. When asked about her responsibilities as an executive producer on Pledge This Paris replied, 'Im not sure what a producer does, but... I dont know, help get cool people in the cast. The star is denying any wrongdoing and claims she promoted the film at every opportunity. She said: 'Any chance I got, any red carpet, any press, if I was doing something for another product...I would just bring it up, Oh, my new sorority film, its going to be really girls-like I really, you know, did my best The lawsuit was filed by the court-appointed receiver for a failed Miami investor in the film, Worldwide Entertainment Group. The film grossed just $1.5 million worldwide. Paris is due in court in June. Mail