People generally get blocked from large social media pages for excessively asking for a follow/followers, sponsorships, reposting of content or other types of products, following/unfollowing pages and so on. Also stealing and reposting content on your own page without permission is a big one. Or just being a general asshat in the comments - posting advertisements or overall hateful and inappropriate comments.
I don’t know what actually happened but I’m sure it wasn’t for “no reason.†There’s always a reason. And there’s a proper way to regain access to those pages- saying fuck you via NS is not one of those ways.