Frustration

How do I describe my mood today but frustrated? I am so sick of going into clinic every few months and begging for a test or for oxygen and getting shot down more often than not. And who do I complain to when the person who is the problem is the head of the department? What am I supposed to do? If I never went back there I'd be getting the exact same level of care that I'm getting now....which is to say NONE....and I wouldn't have to waist my time and sanity on it.