"Waiting for three and a half hours for a prescription"

I recently arrived at Derby Hospital to see a GP. Got told there was no vacancies until next week. I arrived there at 11.20 am. I am on the hospital records so my history is there and my ID etc. There was one patient waiting to see an emergency department doctor. There were 6 people with appointments to see the GP. After one hour it was myself and the other patient still waiting to see a doctor in the emergency side, as we both couldn't see a GP because they had no vacancies until next week. At about 1 pm the other gentleman was taken in. I was the only person left in the room. At 3 pm I was still the only person there. I saw 2 doctors behind the glass windows casually chatting to each other, one had a coffee cup in his hand. Their body language was casual and expressed no urgency at all. Seeing this I approached the desk and asked if I had been overlooked. I thought it was a fair question after three and a half hours waiting for depression medication. The nurse started, in my opinion, an aggressive rant about the Royal Flying Doctors and other things that were none of my business. It felt very hostile. Not what a mental health patient needs. So after three and a half hours, one and a half on my own I left. Went to the pharmacy like a beggar and within 5 minutes I had the medication I needed. They didn't seem surprised at what I felt was the poor service at the ED. I had been in Derby for a total of 7 hours.