You can try to find other non-blocked proxies (there must be thousands of proxies and new additions everyday), and use them.
Try to find a vpn proxy software, i think they're better.

there are some site from where you can use face book, you only need to enter the url and the rest they will do, you dont even have to use proxies.

 You can use TOR BROWSER to try to by pass.
Hope it will work fine, since i used it at college.