Who called from 8642109903

I called the number back and the recording said if I wanted to remove my number from their list, press 1... I hung up

This number called me last week & just called again. No message, not in my contacts, will block.

Call came in on Monday, April 3, at 9:08 AM MST.  No caller ID.  Caller hung up after a few rings.  No voice mail left.

missed call, called back and went right to voice mail stating if "I wanted to be put on a do not call list, press 1".  Pressed one, have no idea who called.  Most likely a scam.

Other sires say either a warranty scam or an IRS scam.  I simply don't answer unrecognized numbers, which is unfair TO ME because I might miss a call that is needed.