Have you experienced dealing with self serving people?your points of view please  

Today, I got really fissed off with somebody at work, the reason? Imagine having a two patients appointments to be delayed for two hours each when these patients are both fasting since midnight just because she pushes her own child before this two patients appointments just so her son can finish on time before her duty ends and her son's case is not even an urgent matter... and those miserable patients were kept on cue...What irritates me more is that...she is a Doctor...for goodness sake! When she's supposed to be taking the best interest of patients first before her own...Isn't it in the code of ethics of medical and healthcare providers? To see to it that patients needs are met and served before their own? How can this kind of people be so insensitive and self serving...leaves me disappointed. Have you experienced the same? your points of view please...