Talked to two women and a guy from this number today. First call was "windows technical department", next was "microsofts technical officer", and the third was a plain old technician from Microsoft.
Apparently my computer has "the virus". I told him is didn't have a computer, and he was very confused.
Many calls from this number. Early in morning, plus other times of the day. Never hear a voice on the line, although, I did hear a call-center type of background noise once.