Farmfoods interview questions

Wasn't really an interview lasted for about 5 minutes. Made me wait around on the shop floor for 15 minutes. The interview was just the manager asking me about my education and previous work experience then ask if I had any holidays booked. There was bout 3 other people that applied for the role and I was told I would find out whether I got the job or not by Monday (My interview was on a Friday). Not very happy with the company as I was told by the manager I was over qualified for the job compared to the other people that applied but I still haven't heard back from them which made me think I was unsuccessful. How embarrassing that I was over qualified for a job that pays £5.70 and hour and still didn't get it.