Heavy Indian accented female 1st, claiming to be from Microsoft Tech & that I have a serious issue, my network provider has been compromised and network is not safe. (HA!) I hung up on her. Heavily Accented Indian Guy calls back, claiming to be calling from South Carolina, and a supervisor, very pushy, wanted me to check things on my pc while he waited. Gave a supposed Microsoft ID of MIC0139. Riiight. I called the number back, got recorded loop of 'this number is not valid'.