"The point is, in business you shouldn't self-destruct just because the other side takes a surprisingly aggressive attitude. Don't let personalities scare you away - because in a lifetime you are going to be selling to a lot of obnoxious people. Stay focused on your goals and stay in the game."
I grew up in a conflict adverse household. As a result, confrontation has often been difficult for me and there was a time I would go to great - and not helpful - lengths to avoid it. Then there was this client about ten years ago who, in a bit of pique, slammed his fist on our conference table and got fairly red-in-the-face mad at me. Trapped, it was a confrontation I could not avoid. Just had to hang in there. At meeting's end, a half hour later, you might have thought he was my best friend. I learned a great lesson that day. Some conflicts cannot be avoided, and that is just OK.