Cox refuses to implement protocols to prevent Spoofed Callers

They haven't complied with the full intent of stopping robocall calls with spoofed numbers.  To do so they need to verify the incoming call is not a spoofed number,and stop it from ringing through.  They have failed to do this. 

I have nomorerobo,I pay extra for my 30 blocked number feature,I am on the National do not call registry, I have a $100 Panasonic call blocking device,

Cox has the resources to stop this, and their alleged "compliance" results in my getting 6-8 spoofed robocalls a day, 7 days a week for the last 18 months.