"Hospital feedback"

I had my appointment for spinal pain relief injections cancelled within a few days of appointment date last Sept / Oct and the explanation I got when I rang to see why was that the doctor had taken a month off on holiday. I have been waiting nearly 10 months for another appointment. And I get no response when I ring them! Explain how a pain relief clinic is supposed to work as I thought they were there to help with managing pain not extending it.