Who called from 8018994130

I have answered it several time and all they do hang up on you right when you say hello. It needs to be STOPED!

WE HAVE BEEN INUNDATED BY CALLS FROM ABOVE NUMBER,WE DO NOT ANSWER IT AS IT IS NOT KNOWN WHOM THE CALL IS FROM,

WHAT GOOD DOES IT DO TO BE ON THE  "NO CALL LIST " WHICH WE ARE ,IF WE STILL KEEEP GETTING SCAM PHONE CALLS AND UNWANTED PHONE CALLS?

HOW CAN THESE BE STOPPED.

THANK YOU