I tell every one of these callers that the person they are trying to reach committed suicide because of telemarketer harrassment. Then they say something stupid like, "Does that mean you want her name taken off our list?"
I got the same robert kennedy on my caller ID, along with Operator, 503-547-1819. I have a REALLY loud police whistle that I have had for years - you can hear it blocks away, and I blow it as long and as loudly as I can. I hope I blow out an eardrum. If that doesn't work, I answer, telling them the person they are looking for committed suicide after being harrassed by telemarketers for months. I have also told them that all telemarketers should be taken out and shot, and their carcasses fed to coyotes. I really hate having a phone sometimes...........