Root Canal. And drag him to the court!

I have done root canal and my treatment is on going since 4 Months for 3 teeth. After so many days finally my doctor fitted the bridge however it was bleeding and I had irritating sensation also there is a Gap between the guns n the bridge after discussing the same with him he is not ready to take it seriously after all the discussion I asked him to remove it n get the new cap created. He as kept the gums open after removing the sam n he doest seems to be bothered payment is already done to him hence changing the doctor is not the solution. When I speak to him he is telling that it will be ver less almost 50% of what I paid. Now if he doesnt pay that I am going to file a complaint against him and drag him to the court