LOS ANGELES — Kim Kardashian may be the star of her own reality series, but the sexy siren is still screaming over the release of her sex tape with rapper Ray J, or so it seems in a purported voicemail on YouTube.

“Why won’t you f—ing answer my calls? I just want you to know you are so disgusting and so desperate,” Kardashian says in the purported voice message to her ex-flame.

“You know I’m going through some crazy s— right now but you won’t call me back — you are making things seem so suspicious. You are a sick human being; I don’t know who you think you are or what you think you’re doing.

Click here to listen (Warning: Contains foul language.) www.youtube.com/watch?v=ndOvgG9qTyM

“I’m going to get to the bottom of this,” she warns Ray J. “I have no words to describe you.”

And toward the man to whom she once bared more than just her famous bottom, the popular pin-up princess clearly has had a change of heart.

“You know what, don’t call me back. I don’t want to give you any more attention. Don’t call me ever again,” she added. “I will have my attorneys contact you.”

And while Kardashian has taken off her clothes yet again in a much more “tasteful” way as a cover girl for the annual celebrity edition of Playboy, we do find it a little odd that her stepfather, Bruce Jenner, bunny-hopped along to see his little girl strip.

“I went and watched Kim do her shoot for the magazine cover,” Jenner revealed last week. “I voted against her doing it. But we got through it and it turned out to be very tasteful. It’s a huge honor for Kim and she is a very beautiful woman. But, of course, as a father it is very strange and disturbing to see your daughter doing something like that.”

Hmm … we don’t find the fact that the Hollywood-hot Kim flashed all her flesh all that frightening, but we do find her father being there to watch a little hard to swallow.