Got same message. They are claiming to be from the enforcement branch of the IRS, and important to respond or have your lawyer respond. This is a scam to get you to give them personal info, including bank account info or credit card info. DO NOT RESPOND. YOU WILL BE RIPPED OFF!. The IRS would never call you, they always send things to you by mail.
Just got a call from this number saying to call back or have my attorney call back to prevent legal action. Seems like a phishing call (why is that not an option?)
Threatened legal action by Dep't of Legal Affairs,
advised to return call to avoid legal mess.
Have no reason to believe this person-
Will not be calling them.