I just received this transcript on my Google Voice line, totally a scam. If you happen to run into it, you can disregard it.

“Name under your SSN. So before we could go ahead and start the legal actions on your name. We want your retained attorney of record to give us a call back as soon as possible at 929-430-6590. I repeat the number. Again, 929-430-6590 and your case identification number is 26 CFR. Do not disregard this message. If we do not receive a call from you or your attorney, either your warrant will get activated. Thank you.”