Who called from 7047901931

Called around 7pm. Didn't answer. No msg left.

Got a call from the same number. Didn't answer. No message left.

Received a call from this number on Sunday. 9/20 at 8:42 a.m.  When we answered the phone, no one was there!  I tried to call the number back this morning and we told the number was not in service.  Thanks for letting me post this.

Happened again today in 919 aera code

got a call from 704-790-1931 at 7:15pm.  I answered; heard noise that sounded like it might be a call center.  A female mumbled something and then hung up.
Tried to call back several times and get a 'fast busy' each time.