It's been a long time but I'm back now. In recent years, I got so many requests from people who wanted to recover their hacked Facebook pages. The main problem is there are too many incidents of this type (maybe millions per month), so the response time until someone from the Facebook staff replies can be long. After all, I decided to write a tutorial about how to do that in less than 48-72 hours.
Important to mention is that if you don't have the Facebook page verified with Blue Badge, it is very hard to prove who is the real Page Owner because it can be administrated by any valid Facebook profile (this is the reason that doesn't exist the feature to recover a Facebook page).