Broadcaster Able remove/rescrict followers
I wanted suggestion that Streamers would be able remove a follower and set it the way he could not follow you again with a time limit or permanently. last year I contacted the staff about follower who refuse to unfollow even he hated me and always came back spy and lose my followers with false facts he never got anything of it. So I wanted to suggest this if anyone has similar situations, to get ability just simply remove the follower yourself and able control if you can follow you again.

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Kozaka commented
You can ban the user, and enable follower only chat. Then he got no way to act. I hope this helps! But I don't know that a ban equals with the unfollow or not.
If not, then I think it would also nice to be able for us streamers to remove followers. Like I have a bot user for my channel, and this bot has already some followers :)