The communication between sellers and buyers is truly important.

If you want a good communication with your trading partner, both parts should presume a good faith from the other side and focus on the problem, not on your trading partner. Moreover threatening your trading partner with negative feedback or insulting him or her could strain your relation and make him less accommodating and cooperative. Keep in mind that we have to be in a win-win situation and that if both parts are fair, there would be no problem. Looking at the situation through the eyes of your trading partner may help you understand the perspective from the other side.