I have tried countless times to call the IRS number on the notice to ask questions - every time I get to the end (after numerous menu selections) and a recording says "..too busy to handle the call, call back another time" and disconnects. I tried calling the Taxpayer Advocate number and never get anyone to talk to. It's pretty much literally impossible to talk to anyone at the IRS. Just curious what this CP21B actually means and how I can find out what to do with it and the supposed refund.
Thanks
