I’ve had similar experiences with the don’t call lists. These fraudsters are outlaws and too elusive to be tracked down. After all, NSA has to keep track of TEA Partiers.
I filed a formal complaint about telemarketing calls to my cell in violation of the Do Not Call List.
I got a very nice letter from the Attorney General telling me an investigation had determined that these were VOIP calls originating in Bulgaria. And as that is out of his jurisdiction I was SOL.