I have searched online sites for this person's phone number, and they all charge for the service. I wanted the number for free.

Do you know where she lives? Did you check the online phonebook for where she lives? That's free!

If her number is unlisted, no one can help you. It's unlisted for a reason.

Maybe she doesn't want to be contacted. If you know her, why not just ask her for her number?

What makes you think you have the right to post someone's personal info on a public web site (the info was removed for the person's protection)? Why do you want the number?