Who called from 7130000000

Got the call on my cell.  Dead air when I answered.  Don't know anything else about it except that they must be scumbags.

Got call on my cell. Dead air for 15 seconds when I answered. Hung up.

I would say that these dead air callers from the messed up #'s have nothing better to do with their time!

I would say that these dead air callers from the messed up #'s have nothing better to do with their time!

Both our cell phones rang at the same time with this number.
No message left.
I answered one with no response.
Robo Call?