"Distressing experience"

I visited yesterday after being referred by my GP suffering from a large painful abscess which required further treatment. I was seen quickly by the Triage Nurse after which there was zero communication and it all went wrong. I don't mind waiting, hours and hours if I have to I'm not a regular visitor and have never walked out or felt I had to before I was offered pain relief straight away which was good only for it not to arrive and having to ask twice after 2 hours for it. The condition is extremely painful, I was left sat on a metal chair (there are no others) for the 5 and a half hours I was there during which time I had no update whatsoever on what was happening. You had to it seemed just grab any nurse passing if you wanted to ask and they all seemed so busy you didn't want to. My abscess finally ruptured in the public toilets, I cleaned myself the best I could and the tried to find a nurse, I was met with locked doors and no one in sight. My choice was to advise reception staff in a full waiting room which I really didn't want to do. The place was filthy floors were black from weeks of not being cleaned and the crevices hadn't seen cleaning for a long time, that was obvious. Finding myself alone in a dirty toilet I felt I'd be better of at home. I left went to the chemist for antiseptic and went home. No one contacted me to find out where I was or if I was ok. I know they're busy but they knew my situation and what could happen, I couldn't sit down I couldn't walk around because of the pain. I've worked in prisons where inmates have conifer chairs, this waiting area is for people who are sick. I'm not sure the problem is resolved if I have to go back today it will not be to the MRI. their wish to have a patient centred approach is a joke. They lacked any empathy at all in just making sure you were ok during such a long wait.