Really important facebook privacy settings question please help!!!?

[Amy]

The custom settings on facebook isn't working for me at all. I've been told to go through all my content and redo the privacy settings to how I want it, but I've tried this and the only settings that work are all friends or only me. This really sucks because I want some but not all to see my content, but when I try to set the privacy to specific people, it doesn't matter, everyone can see it anyway. The only time it attempts to work, is if I have say one person who can't see my content and the rest who can. If I put up to ten who can't see the content then it goes back to being all or no one! Why is facebook doing this? arghhh :/