HARMAN interview questions

I applied to a position on the company website and received an email from HR recruiter within minutes. I was super excited as I thought I was just a perfect fit for the position due to various specifics of the job and me possessing those necessary skills. HR recruiter/talent acquisition person asked me when I was available for a phone interview with her and we talked the next day. It went very well and she seems like a professional in what she was doing. She told me she would talk to a hiring manager who happened to be in Germany and would follow up with me. I waited and waited and waited...2 weeks goes by and send the recruiter a follow up email, no response followed. I waited another week and called her and ended up leaving a voice message, no response followed. After another week, I connected with another HR recruiter on LinkedIn and I tried to get some answers to my questions, nothing from that person either. In every situation, I was very professional and polite, which I cannot tell about the people on the Harman HR side. I just find the people who I dealt with very unprofessional and disrespectful. I think people who work for this amazing and innovating company could do a better job.Very disappointed.

The first round is the technical test with 20 MCQ questions mostly from exceptions, overriding, inner class, multi-threading and collections. Second round is technical interview mostly focusing on Core Java (Exception, threading and collection).