What kind of advice do you want? if you can elaborate your question a little bit then it would be easy to answer what you want to listen. Meanwhile "Content Duplicacy" is theft of content may it be text, video, images for their own website content. Google is seriously taking it as theft and penalizing the sites in terms of ranking drop or sometimes ban in Google search results. If you belive that your content has been stolen by some other site then you can complainGoogle about this throgh DMCA request.