How do I get a stolen video removed from youtube?

[S.A.]

A friend of mine uploaded a video and later deleted it. However, someone else downloaded the video (using an illegal program, i assume) and uploaded it to HIS account, changing the title/tags to something vulgar (in a foreign language I had translated) and embedding it on his pornographic website (there is nothing bad about the video, idk why he embedded it there). There is also a link to his website in the title of the video and the description. I have contacted youtube countless times and flagged the video inappropriate yet no action has been taken. My friend contacted youtube and they sent her an email 3 days ago saying "content has been removed" ...yet the video is still there! The girls in the video are under 18, i'm thinking this could be classified as sexual harassment. Any tips on how to get youtube to remove this video? Should I send them another e-mail?