Private Minecraft Survival Servers?

Ok, so my friend and I are looking to join someone's private server, one where you can just play regular old survival. We used to play on faction servers, but every time we try to build someone comes and destroys it. We're just so sick of having to rebuild everything over and over again.
So we're looking for a private server to join with a few other people. We don't have the money to host our own server right now.
If anyone has a private survival server and are willing to let two girls join, please let me know! And if its whitelisted we can give you our usernames and everything.