I’m recently doing a root canal its taking him 3 ½ years and then he had to reopen it because he did not put the right filling in and it’s still not done and hurt like mad crazy . Then he sends for my cap and want put it on because my insurance ran out. Now the whole thing has fallen apart in my mouth, my tooth that he worked on is falling apart day by day, and I keep getting infections, I can’t bite anything, and he won’t even see me! What should I do? Should I sue?