I've called and text messages the suicide hotline a few times. I think it depends on what you say if they will come. Simply saying you want to comity suicide isn't enough for a knock on the door. But if you say you have a gun in your hand and plan to shoot yourself, or you have rope in the house and plan on hanging yourself then they definitely will come. The key is to remember if you tell them you have plan and have the resources at that time then they definitely will come. The goal of them is to keep you talking until you have calmed down and they feel you are safe to disconnect. Hope that helps.