Who called from 6463571812

When called they left a message saying they're from the IRS and they are suing me.

Getting sued from irs

I've received at least 6-automated calls in the last 4-hours. Claims to be  "informing me that the IRS has filed a lawsuit and I need to return call them back". 5-times they left that same message and I answered it once and I got the same automated message that it is urgent I call them back. Sounds Very Scammy to me.

Called twice in 45 minutes.  Left messages both times.  Both were automated "lawsuit call 646-357-1812"

Calling from IRS, says final chance to clear this up b4 lawsuit. When I cut the recording off, they called again soon afterwards. I have received 7 calls today. I now don't let it go to answer machine.