Ignore.  Total scam.

What I do in this case is to bridge in the Jolly Roger phone service. This is an automated anti-scammer bot that keeps the caller on the phone. The Jolly Roger phone number is 214-666-4321. I bridge in Jolly Roger and it was quite comical listening to the Indian caller try to have a conversation with Jolly Roger :)

Just got a call from this number saying I was subject to enforcement action from the US Treasury

I just received a call from this number saying it was   an enforcement action from the United States treasury and that they need me to call them. But they did not give my name.

threatened to arrest me if 3000 not paid immediately.