That doesn't sound good and you are not the first person reporting this, thank you.
Are you sure there is nothing you have done wrong, like try to create a sneaky duplicate account?
What happens exactly when you try withdraw?
Screenshot possible?

Give us something more to work with here so we can try determine what's up.

Blocking you from FB for asking a legit question (if you didn't do anything wrong) is a bad sign though.

So he/she is still collecting money... and whoever can track them down (Adsense account id) lets hope we get more info.
Don't give up, if you paid for Mars then you need to FIGHT!
or we find the dude as an international community right?