There is a saying, "you treat ppl the same way you want to be treated"
Our biz (not gun related) is known for fast shipping and delivery, but due to the Canada Post delay, we have seen an increased number of rude ppl coming into the pipeline, and they are always new customers. Can't really blame them since they have no past experience with us.
Whenever we get an rude email, we simply take a deep breath and let it sit for a few hours, then take it as a small challenge of the day and respond with manner. I always thought if I can turn things around with our response, it would be a small achievement in my life, there are many times I wish I can respond with what I really want to say in a split second, but after a few hours, it no longer matters in your life. You gotta move on and enjoy your life.
But if the customer continues to be aholes after a few friendly responses, we simply turn on the monotone and you bet your rear that your emails are no longer being responded in a timely manner.