Spammer retaliation

I noticed some spam on the diaries and wrote a comment about it. However, the user did not seem to like that a bit and wrote me no less than eleven emails as well as writing “Spam Spam Spam Spam Spam Spam Spam Spam Spam Spam Spam Spam” on three of my own diary entries.
Is there a way to block a user from sending me messages?

Yes: Get him banned. If he is a spammer, we should get rid of the account anyway.

I’m assuming the admins have done so already because there are no “Spam Spam …” posts below your diary entries anymore.

Yes, looks like the account is gone.