Who called from 9712201780

The FBI wants to warn me of a rash of crimes in my area. New Flash, if I find out where these call are coming from there will be a crime, and I will be the only one left standing. Just saying.....

I keeps calling not saying anything

I've returned call at least three times and chose the option to not be contacted anymore.  I'm still being contacted and on the dnc list.

I have just started getting this number calling me daily and sometimes 2x per day.  No one responds if I answer.

I received a call from this number twice within a week. I have my cell no. on the do not call registry, why am I getting these calls?  I do not want to receive this call any longer.