This was left on my voicemail!
“My name is Ofc. Marcus Brown and I a.m. calling from criminal investigation division ______ _ are at the matter at hand is extremely time sensitive and urgent as after August we found that there was a fraud and misconduct on your tax which you are hiding from the federal government this needs to be rectified immediately so do return the call as soon as you receive the message the number is 202-580-8464
I repeat again 202-580-8464
I called back, they confirmed my phone number, said they couldn't help me, and hung up.