"Completely Disatisfied."

I am incredibly dissatisfied. I have not been allowed to change my appointments straight away, being told I have to wait until the appointment is generated, and then I can change it. This has lead to me cancelling a lot as it doesn't fit in with my shift pattern at work. The Receptions advised that I would be discharged if this continues - the Doctor and their Nurse advised me differently and told me the Receptionist shouldn't have said that. I have been told if miss another appointment (one that I have had no notification of). I want the Doctors Support Secretary twice. The first time, despite them telling me they would ring back after looking into it, they didn't ring back. When I rang them, they were rude and unhelpful, and did not listen. They had not looked into it, and speculated what the reason was. I challenged this, but they wouldn't listen. I stated several times that I had no knowledge of the most recent appointment - they did not acknowledge this, nor did they look into this. I asked for their name several times. They would not give me their name and put the phone down when I asked for their name for the third time. How is this acceptable?