Looking at the website it appears they are a proxy solicitation firm - getting shareholders in mutual funds and stocks to vote on issues prior to the annual meeting. Unless of course there are 2 different DF Kings in New York. The president of DFKing, according to the website is Peter Harkins. His e-mail is:
[email protected]. I just sent him a complaint e-mail, telling him to have his reps leave a message or simply stop calling.