No food after waiting in a queue

On one of the Fridays in the past month I stopped by at KFC Marlboro on my way home from the airport thinking I'd grab a take away dinner for home. I was hungry and tired from my flight. It was around 6pm. The tills were working fine from what I could tell. The staff on the other hand were extremely slow and were busy with personal conversations in between taking and processing orders of a fairly long queue. I stood for approximately 25 minutes and by the time I reached the till and ordered 3 boxes of dunked wings (and chips) I was told that they had run out and that a further batch would not be produced. No apologies were offered for my wasted time in the queue. In fact the cashier almost looked pleased with her feedback. I'm disappointed with service and am surely never going back there again!!! Good service, competency, courteousy are clearly a myth at KFC Marlboro. I was tired and had no energy to inquire of the manager's whereabouts. I figured if the staff are that shocking, the manager would most likely be worse.