Publix interview questions

I applied in store on the machine. The next day they called me asking for an interview on Monday since I applied Friday. Monday came and it was a very long interview. About 40 mins long. The manger was very nice but he did ask a lot of questions on customer service. Every possible question he could ask. So make sure you try to answer them all. He especially asks about how would you handle angry customers and why should you even bother making them happy