Unfortunately, nothing can be done with robotic calls whether you are on the Do Not Call registry or not. The only thing you can do is block the call or inform them when they do call that you live in an apartment and you never receive an electric bill.
Called me five times in a row. FIVE TIMES IN A ROW. Will the filthy deadbeat, thieving, scamming scourges of "humanity" ever just meet their untimely deaths? Useless drains on society.