received a CP12 notice

Have you tried to call Practitioner Priority Service?

What does the notice say?  Has a refund increased?  Has a balance due changed?  

There has been a dramatic inability to get into the IRS since a company called callenq.com came about.  They robocall the IRS numbers, get in on hold, and then transfer that spot to one of their subscribers who has requested that particular number.  They do this for about 20 different IRS numbers, robocall after robocall.  They want $300/mo for up to 1200 minutes speaking with the IRS (not charged for the on hold time).  That fee is up about 300% from 6 months ago with the warning on their website sign up page that it is about to go up again.  Congress has already been warned about them and the AICPA has sent a strongly worded message to the IRS on Aug 8th about the inability to get in on the Practitioner Priority line.  I tried to get through 5 days in a row and on the 5th day (today about 2 hrs before they closed for the long weekend) got on hold with a 15min to 30min anticipated wait time.  Waiting on hold for 1 1/2 hrs got me hung up on and could not get back in before they closed.