Got a call from this number with the phone identification as Prudential.  The obviously Indian accented caller told me his name was Charles Xavier, and that he represented Microsoft Windows (obviously Prudential must be partnering with Microsoft, according to this guy).  As always, we ask that, since we are having a problem with our computer and they know about it, would they mind giving us the brand and model of our computer, obviously this is followed by a lengthy silence.  Have blocked this number on our phone.