Missed a call from this number on my phone while I was at work. No message left

It's a US Treasury you owe us money scammer.  I think they're related to the 845 789 5553 scammers -- sounds like the same people, and they have the same on hold music.  I called both numbers back.  Several times.  Harassed them back, and I had a few laughs with my boyfriend, who also called them.  They will no longer take my calls, but it was fun while it lasted.

Rec'd from this number. Threatening heavily accented male voice   Saying calling from irs.

At 0706 this morning, the fake IRS scam calls began.  This is the third one I have received, all from different numbers and all are total bovine excrement.  Do not answer calls from this number