In May of 2011 I went to have an old filling replaced, I was having no problems with the thooth( back molar). After this visit I began to have pain. I was then sent to have a root canal. After the pain was still present, another visit to the root canal specialist(said there might have been debris left over from the first session) Still having severe pain, I have paid alot of money out of pocket and missed work alot. I am now on Hyrocodon after the last visit(1/13/12) and just dont know what to do next? Pull thooth? Ask for a refund?