I've recently been to my NHS dentist with a bad tooth. He took out a filling, found decay underneath and offered to perform a root canal treatment. He started the treatment then and there, booked me in for the follow-up appointment two weeks later.
Then it turned out that he could neither see the tip of the root on the x-ray, nor get at it (despite me still having feeling in the tooth when he cleaned it out) claiming that there was "some kind of blockage".
Then I got an ultimatum: Either close the tooth, knowing that it might not have been cleaned properly, put a crown on and hope for the best, or go private, pay ten times as much and get it done properly.
Is this reasonable or am I right to be shocked?