I was getting calls from this number. I never answered any, but I blocked them from calling me anymore through my cordless home phone. Works well for the most part. Check your phone's menu for this option & give it a try. Hope it works for you.
I called this number back. They give you an option of pressing "1" to be taken off of their list. The unfortunate thing is that after you press "1," you hear nothing and then you get disconnected.