HELP PLEASE My wife's ex boyfriend from years ago is posting nude photos of her on the internet he wont stop and the site wont take them down

We were contacted a few days ago on facebook by 'made up' accounts sending us these photos and telling us where they are posted. We have requested multiple times that the site remove the photos, also in the posts on the site are her name, county we live in, and where she went to high school. We contacted her ex but he denies that it was him, but he is the only person that these photos were given to. My wife just got a new job and we don't want this to disqualify her for it. We really need help what can we do?