Who called from 3012404102

Called me on Nov 11 2014 at 2:11pm PST. NO message left.

Called me on Nov13 at 4:08 and 5:42pm.  No message.  Who are they??

This is the second number like this to call me this week.

Two calls on my employer issued blackberry number which is not publicly listed any never used. In fact, I have never made a call on this phone and have to look up the number if I wanted to give it to someone. So this leads me to conclude that the call was generated using some type of automated tool that just calls numbers sequentially. In other words, a scammer if some sorts

I Think that you are right as this number called first me and then my wife within seconds on our cell numbers and we are one number away from each other sequentially.