The best restaurants serving Fast food food in Nunhead Southwark London

Awful customer service, rude, ask that i wud eat in, n request bigger box so that i can add sauce to my chips n chicken but guy who serve me told me to use the small box, as others do, wen i said u want me to put the sauce on tray? Or flood my chip, replied back saying im being rude....proper freshy backward guy...need to be fired.