Received a call from this number, left a partial voicemail saying that I should call back this number to find out some more information about some case that is out there on me.

Sure thing...... *rolls eyes*

Same thing here. They used a different 626 number yesterday. Fraud scumbags

And again they called back as a "unknown caller" but left the same phone number to call back to.

So irritating.

It's scam call ,daniel answer the phone ,reported to police

We have gotten at least two messages a day from this number for the past week.  Every message is the same:  The IRS, Internal Revenue Service, is filing a lawsuit against us and we need to call this number immediately to find out more information.  Really?  I guess some people really fall for this sort of scare tactic.  FYI: the real IRS will send a letter in the mail on their official letterhead and in their official envelope.