Who called from 3105434349

They told me they were the "Publisher's Headquarters in California". That I was entered to win $25000, a Ford Explorer, and a Trip to Europe.
They call every week. And every week when I tell them I am not 21, they just say "Oh" and hang up on me.
I think they call because I bought something off a commercial.
The line is always busy whenever I try to call back

They called saying I was entered ito a drawing by my bank for a chance at 25k, a brand new Ford Explorer and a trip to Europe. When I asked to be removed the girl hung up on  me. Attempts to call them back fail b/c the line is always busy

Got a call from this number at 310-543-4349 at 8:40pm last night. No message

I received a call from this number, when I asked if this was costing any money, they hung up on me.

The phone number listed is the same number I just received a call from. Isn't there a way to report numbers and stop these spammers?