Stop calling my number or I will seek legal action against whomever this number represent s

I have been getting calls from this number and from 408-442-3471. They have called me before 7 am three days in a row now.  When I have answered and told them I am not interested and please put me on their do not call list they start saying ma'am ma'am.  And continue to call me.  This morning I answered their questions just to see what they wanted.  They are trying to sell insurance.  I did not give them any information.  I can't tell you the company name because I can barely understand what they are saying.  I hope this will stop them from calling me anymore.

2 calls this AM....no message....Buh Bye.....blocked.

I believe this was an insurance call originally. I told them I was on the no call list and please do not call again. They have continued to call and when I answer they hang up. I just got a call at 6:45a.m.