I just got two calls from this number within one hour. I live in CA. It was just a blank noise both times. Finally I said, "FBI, how may I help you." Immediately a woman said, "I apologize, I have the wrong number and hung up". Weird. Funny.

I'm in CA. I've been getting calls constantly from this number. Some as late as 9:15. Same thing no response they hang up as soon as I say anything.

Consider maybe getting a call blocking device or phone.. You can google them and many are around $50.00 or so.If its a cell phone, some already have call blocking, if not, there are free apps on the web that will work for some. You can google this. If you have a smart phone, there is a free app called call control. Iphones appear to have apps also. Another one is called Mr. Number.

Report your callers here, not just to the DNC alone:

https://www.ftccomplaintassistant.gov/#&panel1-1
https://esupport.fcc.gov/ccmsforms/form1088.action
https://complaints.donotcall.gov/complaint/complaintcheck.aspx?panel=2

By State DNC lists:
http://800notes.com/res/DoNotCall.aspx

FCC Abandoned Calls Complaint form:
http://www.fcc.gov/cgb/consumerfacts/1088D-R.pdf
email:  fccinfo@fcc.gov

These people have been calling all evening. When I finally answered, some guy asked for me and said he was doing an independent survey, wanting to know if I had health insurance last year.

Wtf?...

I just got the same call. I hung up on him.