Who called from 9490293502

Caller ID showed "CALIFORNIA ", a dead giveaway it's probably spoofed.
Didn't leave a message.
Now blocked.

another "Name not Found" caller id, rings 3 times and then disconnects.  Obvious scammer trick.

Computerized voice saying, "Hi. Your computer is generating a [critical] error-" *CLICK*

I don't have time for calls like this.

I'm not seeing the call type this call falls under in the options. What's the phone's version of snail mail's "junk mail" or e-mail's version of "spam"?
Because that's exactly the kind of call this is.

these clowns called at 2:01 pm on 12/19/15 and said there was a problem with my computer. what a bunch of b.s.!

Same.