recorded message from "IRS Agent Nikki Johnson" stating to call immediately about a time sensitive issue.  voice is obviously a computer generated, googling Nikki Johnson pulls up that this is a scam/bogus call.

This person claimed to be/impersonating an irs agent!!! Arrest her immediately!!!!

Claims to be the I.R.S. and you owe them $$. And they are pressing charges unless you pay today.

Keep calling saying the IRS taking action against me

An computer generated message from Nicky Johnson  with the IRS threatens legal action if you don't call immediately.  This is a scam, provide no information but go ahead and call them let them know they're frauds and you know it.  Make their lives miserable if you can.