أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Irated customer will not lister to you at first instance. Hence, let them shout till he will calm down. once he will calm down then listen to there problem very calm manner & make them assure that your will resolve their query. And then find out the solution for there problem.
