Called left a message to call them back but didn't say who they are, just the phone number.

Called twice and left a message saying to call back immediately but did not say who they were. It was an automated recording voice. I got the same voice mail message from 3 other phone numbers today. Very annoying.

Left a message saying to call back immediately. I got a similar message from another number of a different region. Really annoying.

Got a call today - caller ID says "Denver, CO" the automated message (cutoff) says "....information about this case file please call immediately on our Department number 720-365-3340 I repeat 720-365-3340 thank you."
NO THANK YOU AND STOP @$*&@$ CALLING ME YOU SCAMMERS!!!
It's obviously a new scam, because a few days ago I got the same call, and blocked it on my phone.  A few days ago, no one here on 800 notes had posted anything.  Now we are all showing up posting it so its a NEW SCAM - don't fall for it.  Don't call back.

Same day three different numbers .202 239 8121 and 301 245 0420. No names just automated message.