I seriously doubt that Facebook would handle security issues through a domain named
de.lv (that's in Latvia). They notoriously own a much more serious-looking
Even if they did want to deal with a "troublesome" user, I do not see why they would leave the offender 24 hours respite, and not close (or suspend) his account right away. The bit about a "reconfirmation" makes no sense whatsoever: is there any clicking that you could do, which would magically make you less "annoying and insulting" ? Last but not least, the message is written using an extremely, let's say, liberal and creative grammar. Facebook is American but that is not sufficient to explain such murdering of Shakespeare's language.
So this message has all the hallmarks of an amateurish phishing attempt. Just ignore it, it deserves nothing better.