Stolen ebook you can download

I just discovered my ebook Aegean Recipes Vegetarian Dishes Cookbook is on a torrent site.
If you visit this link below:
http://download-file.net/…Vegetarian%20Dishes%20by%20Nur%20Roy.pdf

You can download my ebook if you subscribe them.
It seems like they offer in many file format download option for my ebook illegally!
So here is a question to authors:
What do you do if you find out a torrent website offering your book to download at their website illegally?
I already contact them, so far no respond.

download illegally
Do they care copyright?

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