strange moment

My enter today was sparked by a doorbell ring about 10 mintues ago here at my home. I opened the door to an elderly man holding a cane and wearing a smile. He started rambling something about veterans and how the only person that shut the door on his face was a Jahova Witness (hope I spelled that right). He grabbed from his pocket a laminated lisence (??). It was faded and warn and had something about being a veteran on it. He proceeded to question me on my family or friends that have served in the war. I wasn't aware of any immediate family that did, but I have relatives in the service now. I handed his "license" back to him and he traded me that for another laminated page that was worn and tattered as well. I couldn't tell what it was nor could I understand what he was actually saying. Then instantly as he was rambling he grabbed the paper from my hand and stated that I didn't seem to be interested and stormed off. I stood there shocked a little. Not really knowing if he was selling something or just honestly lost and confused. I feel guilty for some reason. I admire and respect those that served in any war and I had no intention of disrespecting him. Did I? I don't know. It happened so quickly. All I was trying to do was understand everything he was mumbling. I admit I don't like door to door salesman and will never buy something from that source. As I watched him walk quickly away I felt like I should have said something....I'm sorry....please come back??? I don't think he was selling anything. I hope I didn't hurt his feelings.