I receive so many bogus calls from this number. Is there any way this could stop?

Number is on my phone repeatedly...don't know who it is from

If you see website who called me the post that was added last

picked up but no one answered

I picked up but there was no one there.  robo-dialer?

This is a phone system called all stream. Usually unsavory people in unsavory worlds use it with a remote IP phone that is used to place calls monitor calls on a 3way call. The individual remains untraced using GPS so law enforcement has trouble getting a fix on caller origin