Who called from 4158004078

My father who is disabled has received phones calls today from this number one a man sayin his name is David Jackson an then a lil  over an hour ago received another call with nikki Johnson an she let a threatening message on my father's voice mail

I received call like others from the number. I presumed it was a scam and ignored but got on computer to see what was being said and done about call. IRS GOING TO TAKE ACTION AGAINST ME.

Said they are the irs and im being sued so i told him my slurpy machine was out of order try again beeep

July 24 2015 Received same message, same number and name.  Scam

I have received 3 phone calls in the last few days and today they finally left a recorded message saying to call Nicki Johnson.