Best answer by djraveinpeace
Thanks for visiting the help forums :)
I think your best bet will be to check out the link below as legal/copyright issues can't be dealt with directly on the forums due to the specialised nature of this particular type of query:
If you get in touch with the legal team and/or copyright team, make sure you include links to the original track as well as the offending unofficial remix.
I hope that helps :)