Who called from 6613282939

not sure who this is or how they got my number/

661-328-2939 I want this number to stop calling.  They call several times a day.

I've received several calls from this number and there is no one there or they hang up.

Number calls nightly for the past week.  Never leaves a message.

I keep getting hang up calls so signed up for caller ID and eureka, I found the number that is calling and hanging up without leaving a message on my answer machine:  661-328-2939.  How the heck can I block this number!??