I think all of us realize that how we act/ what we say is reflected on our sales, even here on the forum. But gee... I would definitely tell someone to shove it if I felt like they were being completely unreasonable and I (or others) have had multiple similar run ins with that person.
I will never feel obligated to make a sale, especially if I feel like my animals are not going to be taken care of properly. I am going to sleep a lot better at night knowing that animal is using a space in my rack and eating my rats than in a bad situation.
"We owe it to our animals to make sure they go to good homes where they will be taken care of." This, and the fact that every single one of them are MY babies.
I had a guy get upset with me for asking if he got his A/C problem fixed. Heat spike killed most of his frogs. He wanted to buy one of my frogs and yet he didn't want to be "Quizzed about it on every PM."