Many of the groups actively involved in acts of piracy thumb their noses up when contacted by the designer to end the copyright infringement often because designers don't follow up by filing complaints with the appropriate authorities.
In the Australia reports may be filed with the Australian High Tech Crimes Center (AHTCC) which is a nationally coordinated body ::
The AHTCC is staffed by members of the Australian Federal Police and State and Territory police from throughout Australia, as well as representatives from private industry and government departments. (ref AHTCC About Us)
You can find the Online Crime Reporting submission form here which is specifically for the reporting of instances of high-tech crime in Australia.
If you are an Australian designer that has been affected by an act of piracy, it is well worth filing a complaint with AHTCC as well as the Internet Crime Complaints Center (IC3 - the US based FBI/National White Collar Crime Center partnership) because of international cross-over of jurisdictions between designer, selling point (ie the digital scrapbooking store/s that the designer sells through) and the location of the individual/s or group/s that initiated or is involved in that act of piracy.