"Broken wrist"

My son broke his wrist 6 weeks ago and is still waiting for treatment! He was supposed to have an operation but after several phone calls it turns out he has been discharged! supposedly he has already had the operation. The staff say they are going to ring him to tell him what is happening and a week later he is still waiting. I am not medically trained but even I can see that his wrist is badly out of shape. We have tried complaining but absolutely nothing is happening and we just don't know where to turn. I no longer have any faith in the NHS.