The trick to making these calls stop is to convince them that they are wasting their time and resources to call you. This is very difficult to do since the resources that they waste are small and the reward of scamming you out of your money is so great. I have found a way however. You must proceed until you get to a live person. Then tell that person in the most forceful, obscene fashion that you can that they should go engage in intercourse with themselves and then call you back to report the results. This conveys the idea that subsequent calls will not be productive and they remove your number from the list more certainly than any other way that I have found. It also is very good for relieving the frustration that they have caused you to feel.
Perversely, this is also what is best for them since it prevents them from wasting time trying to wheedle you into changing your mind.
Try it, you'll like it.
Feel free to cut and paste this advice on similar sites!
We do not even bother answering, any calls from this area code. If it is so important they can lv msg. Otherwise talk to the hand, especially the middle finger!!!
I echo all of the previous comments which has happened to me except now I have a silent weapon. If you own an android phone install the app Mr. Number.......what a pleasure to see all of these spam calls get picked up and hung up on and blocked. Google it for more info.