To get back your deleted and disabled FB pages by requesting facebook using below form.
Fill out this form if your page had a bug – accidental deletion, hack attack, etc.
Facebook is not like google, If you violated Facebook policy then FB will not be gone enable your page because their business is not related to your page.So think before you respond, Facebook is evil and they follow their rules very strictly.
There are a lot of report against Facebook and there are many big Facebook pages with more than 5M likes that are deleted by Facebook for violating Facebook policy.
So if you are one among them and you think you have violated facebook policy then there is very less chance that they will republish your page again.