I just talked to some Jehova supporters knocking on the door. I told them on what points I strongly disagree with them and that Im negative towards their way of thinking, still they thought it was interesting to talk and want to come back and talk again

They don't give up eventhough you reject the stuff they want to give for free.
I should just have kept from talking about religion, but they rather see it as an advantage if you say you believe in Christianity, they just forget about what you say about Jehova, and that I said I was Protestant. At least I know that they might come back, then I can just reject everything they say.
Bloodtransfusion and eating pork are interesting subjects when you talk to these jehova supporters.