The IRS has ended unannounced Collection Visits by Revenue Officers. The new policy is:
in lieu of unexpected visits, revenue officers will now instead send taxpayers a 725-B appointment letter to schedule a meeting, allowing taxpayers time to prepare and prevent the need for additional future visitation.
This letter is sent to schedule a meeting. DO NOT CALL THE IRS! Instead call your tax attorney to schedule a meeting. There is nothing you can ever say to the IRS that will help your case.
If someone comes to your house saying they are from the IRS it is most likely a fraud or scam. Do not let them in or give any information other than to call your Tax Attorney.