Publix interview questions

My grandma is a regular at the store so she talked to the manager for me and I applied. I called like every 2 days or so to check my application status. I called on a Wednesday and one of the managers told me to come in on that Friday for an interview. I was super excited because I was sure I had the job. They asked me questions about me, what good customer service was and stuff. After the interview, I thanked her and I was told I would get a call that Monday if I got the call. I never got the call. So on monday I called to confirm I didn't get it and she said yeah sorry and told me they would be hiring again in 3 months.