Am I being rude?

One time, I had my car on jack stands in my driveway, and I was under it. two people came up to me and started talking to me. All I saw was black dress shoes, and black slacks. They started talking about come form of religion. I am a church going Christian, and I do not want to listen to the dribblings of the people who normally come to your door. So I told them I already knew God and that I wished them a nice day. They would not take that for an answer. I had to get FIRM for them to leave. Was I being rude? NO! I was on my property, I did not want to be bothered, and THEY were the ones who would not take no for an answer.
had the same happen only I was dressed to go to town, courthouse i think. The guy wouldnt leave I did get rude and pointed to his bible and said "you do know that book was written by human beings don't you...?"