The case of this user https://spanish.stackexchange.com/users/2606/bruce
He ask 3 times the same question and ask again in an answer
and in an answer that was removed he ask again.
I think this something more that a misunderstanding of how the website works.
What are the step that the moderators should take to avoid this kind of things.
I know for example in Stackoverflow when you have certain quantity of question with downvotes or Duplicates you wont be able to ask, or if you are really doing spam you will be banned.