@ Resident47, This number isn't pretending to be Microsoft. But, they are insisting that they're getting some sort of info from a person's Window's computer that it's infested with something. So, it is similar.
The main "verdict" is that _NO_ operating system programming company --_not_ Microsoft, _not_ Apple, and certainly _not_ ANY of the Linux Distributions -- _NO_ operating system programming company makes these types of calls. period.
Anyone who thinks that they do doesn't know anything at all about computers or how to protect their computers or themselves and will fall for ANY scam.
I'm aware the PC tech crooks use varying scripts, which all boil down to an absurd premise that bad things are happening to a computer and a stranger on the phone was magically alerted. You're correct that technology companies in general don't go around creating reverse trouble tickets for their customers, much less bombing the whole town with calls until unwitting "appliance user" pigeons respond.
I did not title those discussion links. Those are quoted from the Microsoft pages. Since the scammers want only Microsoft OS users (for now) and many have posed as MSFT techs, it's expedient to refer to both elements of the scheme.