IRS call. Blocked

Got two calls with robovoice recording claiming to be from the IRS and asking for an immediate call back.  This needs to go directly to your auto-reject.  IRS will never call you.

Multiple calls from this number, voicemail left -- same as above.

Multiple recorded messages, threatening unspecified action by IRS if calls not returned to the "IRS officer _____ ____".  Garbled audio, had to listen 4x to be sure I was transcribing it correctly. I've talked with the IRS the past, this was only sort-of like them, and they don't initiate the contact by phone, only after you've contacted them. Besides, they called on a phone line that I don't use with the IRS.

This # calls me multiple times a day and leaves insane messages about being in trouble with IRS and the person sounds really drugged out.

I called to have my # removed from their list and was hung up on repeatedly. Then I was told to [***] off and [***] yourself, among other things, when I asked what they're doing and that it seemed like a ridiculous scam to me.

It sounded like the same guy answering but he'd change his voice. Broken English, sounded Indian. Laughed like a maniac when I pleaded to have my number removed.