Who called from 6161234567

They have called me 11 times in the last 2 hours.  I answered 3 times.  Each time an automated voice says "good-bye"

I have received numerous calla from this number. They leave no number and the number comes up non-existent.

Calls from 661-123-4567 come in daily.
How we report them?

nuisance

Some keeps calling and doesn't leave a message but there is a lot of background noise of others talking.