I had a call last night at 11:10 PM. A woman of Indian accent told me that she was with Microsoft and wanted to know if I was having problems with my computer. I did hang my phone and ignore her request.
Today she called twice and when I did recognize her voice she insist that she was not the same of last night but my ID caller shows the SAME PHONE NUMBER!
Looks like she is kind of LUNY.
Last night I received a call from 2031513267 at 1:30am. After a 10 second pause they said goodbye and hang up. Occasionally I've had similar calls at daytime in the last 6 months, not sure if from the same number.
interesting that i found this number here, this morning I got a call from this number, somebody on the other side telling me somebody else try to log into my computer, ask me to check right away