أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
my favorit one is am really sorry this has happened. Let me see if I can find a solution to it
Based on my experience I would calm them down and talk to them what was the problem? I would do it in a calm and soothing manner so that they would feel that they are speaking too high or almost cause a scene at the establishment. Clearly the best way to handle angry customer is to attend to their complaints as to why they have arrived in such state. Sort everything out, explain the side of the store and do not forget to say sorry (even if you don't actually have to sometimes).
to handle angry customers complaints you should conseder two important things
1- what makes the customers angry
2- change place with the customer and see how if you had the same problem will you get angry or mad?