FDM Group Software Engineer interview questions

The interview felt a bit sketchy. I applied through my campus and received an invitation for phone interview a while ago. A few red flags with the interview. First, the interviewer requested a last minute schedule change, which is totally unexpected. I agreed to the schedule change, but had to actually call in to remind the interview. Second, the recruiter seemed she knew nothing about the position. I noticed that because there were a lot of awkward silences / waiting for her to respond. A strong feel that she was reading questions off a piece of paper. Also had to end up explaining to her the summary of the job and requirements. Third, when the interview was over, the recruiter reached out days later requesting the exact same interview. Had to explain to her the interview was already finished, which she realized it upon double checking. Still can't believe a recruiter from some consultant company lacks basic skills as an interviewer. Overall, the interview felt very bland and unprosessional.