Infernal waiting for emergencies. It's been years ...

Infernal waiting for emergencies. It's been years I did not go but last week I was surprised they did not show the evolution of the queue nor tell you your priority. You have to wait patiently without any indication of when your turn will be. I waited from 8:00 to 16:00, when I was called at 16:00, the nurse said 'I called you two hours ago and you did not answer, ... . The problem is that I was only 20min away between 12:30 and 13:00 to buy food at the restaurant in the basement of the hospital. When I returned, there was no hint that I had been called or that my turn was over. Very disappointing and enraging to learn that we waited for 3 hours more just for that.
I give two stars because the staff do their best with the means of board.