You can file a Digital Millennium Copyright Act Violation with the host.
Here's a sample/draft one that I use:
To whom it may concern:
My copyscape protection alerted me that you have a website hosted on your server that contains my stolen original content.
The stolen material on their site that is hosted on your server is located here:
http://www.THEIRsite.com/page
The location of our original content is located here:
http://www.MYsite.com/page
In case you are not aware, this content is protected by copyright and by the Digital Millennium Copyright Act and cannot be reproduced IN WHOLE OR IN PART.
http://en.wikipedia.org/wiki/DMCA
Please suspend the account immediately to prevent the distribution of my stolen original content.
I can be contacted at:
<name>
<address>
<city> <state> <zip>
<phone number>
For the record, I am stating that in good faith belief that use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.
And the information in the notification is accurate, and under penalty of perjury, I am authorized to act on behalf of the copyright owner.
Thank you.
<name>
Thats always been sufficient for my complaints.
Hope that helps.
