Received this same scam voice mail.  Immediately reported it to the TIGTA office.  Called the number back,too, just to rub it in their face.  The person answering the phone was difficult to understand, but he understood me, and hung up on me.  Take your fake job and shove it 412-226-5765 Officer Nicky Johnson, NOT, from the IRS

Automated machine called from number 412-226-5765 it related the message that it was important either my attorney or I call officer Nikki back to discuss a very important matter to avoid further charges. I called the number back but it only rang no one answered. I googled the number and found this site with the story of others who experienced the same. Glad I googled it. It's fake.

Thanks for sharing everyone.

I just received a call from Nikki Johnson #1-412-226-5765.  This is the second call this month from Nikki but the first, 4/13/15, was from phone #1-424-260-8844.  Be aware!   Nikki is a fraud & has my cell number.

I just got a call yesterday from this same number.

I just received the same call. We need to let the local news and your states Attorney General know what is going on. I will not put up with this  **** again. Do not pay anything. The IRS would send letters first and they do not send people out to arrest you. That was the threat I received.