Here is what I am doing. There is an AP called mobile manager. It has unlimited numbers you can ad to a black list. My phone rings once every time a number on my list calls. Then it stops. I later look at whom called, and bust out laughing because I won. This is a mobile phone which had a land number. Worse yet , it is business number which are not immune from solicitors. For home phone calls I have a Panasonic with 30 number memory to block. My experience with the do not call list is BS. We still get calls at home/land even though we sign up every year. I don't believe it works at all. But sight unseen so I'm not positive. Perhaps calls never ring through and I'm unaware. We still get enough.
Check for the AP. Mobile Manager. Also look at Panasonic home phones.

Ps, my email still gets tons of spam. :(