Time Warner Cable keeps calling trying to sell me stuff that I have told them I do NOT want. They know I am on the DO NOT CALL list, and have been told to stop calling. Time Warner Cable is saturated with idiots.
Tell them "put me on your not call list." Use exactly those words. There's an older law - probably about 25 or 30 years old - that requres them to stop calling. Sometimes saying those words makes them stop.
The other choice is to stop answering calls from that number.
Got one today, hung up before the answering msg finished. The log says they are from "Affinitas Corpo" Putting them in my block list with Ooma. Someone here said TW, I have TW for my i/net only, but I live in SoCal. This 480 is somewhere else entirely.