I am finishing up the results section of my dissertation, and I am completely frustrated! I feel like I am on a seesaw with my supervisor. She has little interest in my topic and says she has little time to read my items because she is too busy. I hand something in for her to review, she suggests changes, I make the suggested changes, then hand it back to her. She reviews it, and several weeks later she says she doesn't like the document and suggests more changes which I had made in my document in the first place. She has been doing this with her for the past few years, and when I ask if I will be finished my dissertation in a reasonable amount of time, she reacts if I asked her something inappropriate, and gives me some BS answer in response. Is this just par for the course with the PhD, or do I have a incompetent supervisor? How do I content with this, if I am going to finish my PhD and still have a penny to my name and some sanity left?