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:…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?