Loads of questions about casting for Harry Potter and The Prisoner of Azkaban have been buzzing around the CBBC Newsround website message boards.
Some who have written to the Azkaban casting office, set up in September, have had no response.
So they are confused about whether casting for key characters, as well as smaller parts, has been completed yet.
A spokesperson for Warners told the Newsround website the casting office is still open and they are checking letters to see if anybody is right for the movie.
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