They have been calling me as well.
I am on the National Do Not Call list also and decided that I had enough and filed a complaint against them with the www.donotcall.gov website.
I even asked to be removed several times from these people they call at what seems like all hours of the night.
I got a call tonight at 8:45 and called them back using the number posted by Pat above (212-260-0070). The guy on the line was perfectly nice and explained it was a computer dialer for a political survey (which is exempt from do not call registry from what I hear - he did not claim that and I didn't ask). I asked to be removed, he took my number and apologized for the inconvenience.
The latest call I received was Monday night at 8:47 pm. I answer the phone and I get a click. On an average of one week, I received at least 15 calls. I am also on the No Call List. This is very frustrating. How can we put a stop to this.