Its highly doubtful the poster will even see your post as its 3 years old. This forum does not send out reply notices either. And calling the phone company to do this is not the only option, there are cal blocking devices and phones on the market.
I lose my phone pretty much every day (AD/HD). I've never been spammed by these guys. But when the call rings, there is usually a long message for that humor service. I'd be afraid to block them if they did -- how would I find my phone?
But thanks for the info. I just added them to my contacts so if I see their name on a call I just won't answer.