It may not be worth your time, but I wonder if this is a money making opportunity? You say they are consistently calling. Can you record them (you have to inform them that you are recording) or at least log the calls. You could put it on speaker phone so someone in your home can be a witness that the call happened. Tell them each time to remove you from the list. There is supposed to be agencies to deal with “do not call” violations. A few that came up with a Google search
I’ve never gotten consistent calls (after I told them to take me off the list), so I’ve never been in a position to make money, but perhaps you can!
I’ve gotten the Windows Technical Support call a few (<5) random times. So far I've just had fun with it by having them quote prices and then telling them I have nothing but Linux (not true) or my favorite, asking, "I don't have any Windows machines, but can I pay you some money anyhow?"
