Received and call from 877-841-2415, someone identified themselves as John Willems from Dell Technical Team and said there was a problem with Microsoft updates/issues and commenced to identify me, that fact that I had a Dell XPS, the purchase date and my Service Tag number.  As he went on, I felt uncomfortable with where he was leading me to go with gaining remote access/control and telling me I needed to purchase 8 different software apps, etc.  I dropped the call, but am now concerned that he knew all this information that I feel only Dell should know.  Was this a legitimate call from Dell, or has someone breached Dell data and got customer information?