"Hi, I'm calling to ask for donations to our 'Stop Robocalls' lobbying effort." If you set up a nonprofit org., and did that, then you would probably get past a lot of roadblocks, and might actually make some money.

If this is true you could just robo call them with the intent to sell them something, or looking for someone. The annoyance part is merely a side effect vs. the whole purpose (at-least it could be argued that’s the case)