The best thing you can do is talk to one of the screeners to take up as much of their time as you can without buying or giving them anything. Then at the last minute either just laugh at them or cuss them out......or even better.....tell them that you know who they are individually and where they live and that this would be the last day that they would be calling anyone.... then hang up.
Continue to get calls from these people. I am and have been on the Do Not Call service since it started, I have updated/renewed within the past 6 months as it does expire after awhile. But still these types of calls go through. HOW?? No cards for the past 8 years,nothing to reduce. How can they be made to stop? VERY ANNOYING... and extremely rude people.