First, don't overreact.
If you want to be treated seriously, you should be the author (contributor) to the project which code has been used contrary to the license agreement.
Here is a pretty good guidance and there you can report a GPL violation:
@saper Thank you, this is very useful. I'll keep track of this company and see if they end up releasing the Software License acknowledgement or not (I know for a fact that they are using multiple BSDL software), and decide what to do.
They are not a large vendor, but they are making money and doing their best to “hide" (obfuscate) the work of others.