Does anybody know how to report pirated books being sold ...

Does anybody know how to report pirated books being sold on iBooks/iTunes? Is it just through the apple.com/legal/contact form? There's a form for reporting pirated works on iTunes but it doesn't work for iBook URLS. Asking because "Booklassic" has pirated one book and three short stories on iBooks now. The short stories had been posted on my web site and were free.

This is why I've removed most of the free short stories (including Raksura stories) from my web site. "Booklassic" has sold/is selling them on Kobo, Barnes and Noble, and now iBooks/iTunes.

I don't want readers paying money for stories I meant to give away as freebies to people who visited my web site, especially when they are short stories the pirate is selling as complete novels. I apologize but there doesn't seem to be anything I can do about it except continue to report it to the retailers, and I'm pretty sure this person intends to sell every piece of free writing I ever put up on my web site.