Ok, so here's my experience...
The called and did the same thing, but I went through with it.
Windows r does nothing but opening up the finder.
then they ask you to input eventvwr
this takes you to the even viewer screen.
afterwards, they ask you to go into error messages.
None of these give access to your computer.
I kept playing along, and they ask you how many were up, which i gave a FAKE number for,
then they did a "transfer" to a supervisor
it is a scam I believe from what i've read.
JUST DONT GIVE OUT PERSONAL NUMBERS. THESE GIVE ACCESS