DBS Bank Senior Java Full Stack Developer interview questions

They have sent a hacker rank test link and asked me to complete the test, it is a simple test contains basic core java, spring and react questions(MCQ). After 15 days they have scheduled a L1 round on 24th, October. I think he is less experienced guy , asked very basic questions from java( streams, functional interfaces) and spring boot( repeated the some questions for 2 times in an hour meeting, may be he has not prepared for asking the right questions it seems), I answered every with real time examples. I am very confident that I can clear the interview but after 5 days multiple follow ups I got an update from the HR that I didn't clear the interview. Very bad experience, I have asked the interviewer listen the interview recording or share the recording with me but he said we don't record the interview that means some other candidate from the referral will get the job, they simply waste our time by conducting the interview.