"I can't appreciate rude staff"

My GP surgery referred me urgently to eye casualty in January around teatime. They said that the surgery had inappropriately referred me and I could try NEMS. I have never been to NEMS before but decided to go in and ask the waiting time.

There was one trained nurse on the reception desk but when I tried to ask the question, as they didn't listen to me they barked inappropriate questions at me (thinking I was a relative). I said I had my urgent referral letter and I was a patient  and they barked at me to sit down, saying they were busy doing something, then vanished leaving no staff there.

I waited a short while and decided I didn't like the tone of the department if that was a snapshot of it and there seemed to be a few waiting so I left. As I went to push open the door who should be pulling it open but the rude nurse, as a patient/member of the public did they hold it open for me? No, they pushed through and never even acknowledged me.

I can appreciate a busy department but I can't appreciate rude staff, they choose to work there at the end of the day. They might have been having a bad day but did they know about mine?