Who called from 4154138739

I got a message from this number saying they were Officer Julie Smith with the IRS. She wanted me to call back immediately before IRS took action. Definitely a Scam. A few minutes later the same message from the same person different phone number this number was 415-234-0492.

I received this same call and the interesting thing is that it occurred within a few days of me filing my return (I was late this year) so  I wonder how they are obtaining the phone numbers or if that is just a coincidence.

Received same call and advised Kelly Walker.  I called and they hung up on me and I could hardly understand them.

Call advising they would take action from IRS agent and Kelly Walker and hung up.

got the phone call. all previous IRS contact has been from certified mail. scam?