Use "Report to moderator" and report the posts that break the rules. I doubt there was only one plagiarized post.
A wall of text is unlikely to convince moderators to just ban him again for a previously reported issue.
Funny, moderator deletes more on topic posts from genuine people and leaves the ones from trolls from this very thread too. I wonder how effective the report on plagiarism would be. Seems there is on going moderation bias by somebody.
Sounds right from a person with an habbit of being biased even in this thread too by ignoring the fact that the OP is full of shit.