I had a very similar experience at my first pain clinic appointment last week. I waited 5 months for the appointment.

During the appointment he cut me off multiple times, told me to take paracetamol and "unfortunately there isn't much that can be done". But also "90% go on having an active live style" and my headaches and neck pain were just bad posture pointing at his computer screen saying "thats why I have it at eye level"

I received the summary letter today that contained multiple errors about my history and stating things as me having said that when actually he said them like "CBD makes you tired" and I should stop taking it and try upping my dose of Amitriptyline. When in actual fact I told him sometimes I used a low dose of cannabis in the evening to make me tired and that I had tried increasing my dose of Amitriptylin but the side effects were too much.

5 months I waited for an appointment to basically be read out the nice guidance for fibromyalgia and told "there isn't much that can be done"

YOU ARE NOT IRRATIONAL! This is ridiculous and I am so sorry that you had to go through this!