1 person working for the night!!!

Jan 24th at 20h15 i stopped at the drive through. There is only one person here. She takes the orders then make them. It is now 20h48 and i now have my order. I could not reverse as there were cars behind me. I wouldve left after 10 min of waiting. The poor lady name was Gugu and there was only 1 cashier as well. Bad management expecting 1 person to work.