IMDB will not delete an incorrect credit for an actor who does not appear in this film
Someone has wrongly added an actor's credit to a film I recently directed. However, the actor in question never appeared in the film and was not part of the production in any way.
I have attempted to rectify this by submitting a deletion request. I accompanied this request with a Dropbox link to a screengrab of the credit screen. The film displays only one credit screen, on which all participants in the production are listed, including cast and crew. This confirms that the actor did not appear in this film.
Unfortunately, IMDB informed me that the request has been declined because it "Does not meet contribution guidelines."
What do I need to do to make a successful submission?