Fragen im Vorstellungsgespräch für Beschäftigung als Software Developer (Java) bei Reputation

Started with HR contacting me regarding opportunity. I had two interviews, I cleared the first round, my second interview also went great, but there is no response from the recruiter, when I tried reaching out HR through email, there's no response, I tried calling the HR, she didn't even pick up the call initially, she attended my call after two weeks, and she said that she didn't get the feedback from the interviewer yet. They can just say, we can't proceed with your application or kept my application on hold. Not sure, why they are doing this.