Answered the call and went through the prompts until I reached a real person. He asked my name and I asked the name of the company he was calling. That resulted in a hang-up. Screw these clowns.
I too got a call from this number, when I spoke with an agent and asked to be put on the do-not-call list he told me 'no'. It's my understanding that they have a legal obligation to add you to the list when asked.
I asked for his company name, and he responded that "I am not going to do business with them, so their name doesn't matter" and hung up on me.