@BrideOfLinux I just looked up pieville.net, and based on the server admin's toots, I wouldn't expect the pieville admin to intervene. Perhaps you can share the exchange with your server admin to have the user and/or server blocked on your instance (if that is what you'd like)?
This is my first experience with a user abuse issue. I've heard Mastodon has ways/tools to moderate better than Twitter, so I seeing how this plays out.
For example, if your admin does not intervene would you migrate?