My facebook account has been disabled.?

(Second attempt, leaving out the sense of indignation). I beleive unfairly. They are dragging their feet on sorting it out and have not given me a valid reason. I have suspicions as to why but have no proof. What can I do about it and how can I make the best of this? (It's either an automatic thing that I've trippped. Or it could be a false acusation of cyberbullying. But I do not know which for sure and this irritates.)