I have had this call more than once at my place of business. If I answer with the company name, they never say anything. Today when I saw te number I just answered with a "hello." They asked for someone by another name and I told them there's no one here by that name. Before I could say remove this number from your call list, the guy just hung up.
 Feb 15th, 2013
dead air when I answered
 Dec 31st, 2012