I used to get the company information about telemarketing calls and then post it in forums like this one. I also used to get the company president's personal home phone, along with their relative's numbers and put them here for all to see and use, along with a recommendation to call them around dinnertime. But what I have learned is that they are cockroaches, and for each cockroach that you block with your phone, they simply re-invent themselves with another spoofed number. It's their job to annoy us, and they enjoy it.
Even though telemarketers are a fungus, I have come up with a solution: They should all be rounded up, put on an island, surrounded by a chain link fence which is electrified and then let their entire culture die out together.