Anyone that comes to my home to sell me anything including religion gets the same reaction. I hold up my hand, tell them to stop talking, that I have no interest in anything they have to say, they should leave now as they are trespassing on my property without permission and that this is polite as I am going to be. Generally, they don't say anything, turn around and leave.
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"I didn't care what she didn't 'low--I would boogie-woogie anyhow" John Lee Hooker