Who I have the same questioned this topic

I've had about 3 different "teams" now come and knock on my door in the last couple weeks, all trying to sell me Verizon internet. Not only do they knock, they knock repeatedly as if it's an emergency. Followed by constant ringing of the doorbell. It drives my dogs nuts. I've told them I'm already a Verizon customer but I'm not interested and please don't come back. Yet they keep coming back. What list do I need to be put on so that I am no longer visited by your Verizon teams?