Who called from 8182355779

Received a call from this number
Called it back and got a recording about being transferred to the next available agent
It could be legit as I did not get the usual "mailbox full" or "no longer in service"
Listened to the message twice and gave up waiting to find out who it is

called, no msg left

Sand negro calling with some sort of BS scam.  Got mad when I asked if he preferred sex with a goat over his sister.  Sheesh.  I'm trying to do research here.  You call me, you're getting questions - LOTS of them.

Heavy breathing then they hung up.

I am on the do not call list in this phone numbers calling to solicit me, i'm already on the do not call list how do I stop them?