Called twice.  Had a caller ID Troy XXXXXX. I answered on second attempt.  'Troy' claimed to be from Microsoft. I asked 'Microsoft?' and he simply grunted  'Yeah'.  HAHA. Said he heard we wanted to upgrade to Windows 10 and was ready to help.  I asked him did he know what city he called and he promptly hung up.

I actually returned call and Troy was trying to push Microsoft Windows 10. When I let him know how crappy this operating system was he stopped with his sales pitch and apologized for calling. No harm done.

Same here, just called, no message left.