I received a called from this number answered the phone and no one said anything and hung up. This is getting out of control all these different numbers I am receiving never says anything and do not leave a message why?

Called twice, never left message. California

Rang once, hung up.

Called my cell. I've only given my cell to 4 people so this must be a robo-call. I'm blocking it. Get a real job, jack-a$$.

im guessing it's a way to sub convert the Do not call lists. They call and hang up. You see the number and then YOU call them back.  I had other numbers try this and I called one back and when they answered the sales pitch happened.