Who called from 7042753668

Rang one time...I blocked it immediately.

Time I got to the phone they had hung up.  Didn't leave a message.  I am on the do not call list.  Phone is unpublished and unlisted so how to they get the number?

Machine dials numbers "in sequence".  Some are just a machine to determine if the number is valid, then the number gets on a list of numbers for others to call.  i.e. You answer the phone and it disconnects.  (I have read that anyway. Can't vouch for it)  8-)

Calls my number every day, multiple times.

Called me 10/26/2016 but my robocall blocker cancelled it after one ring. It's a terrific service to have.