HSBC Senior Performance Engineer interview questions

I asked for 1st round done over telephone, but has been denied. Then Interview has been scheduled and I reached. I waited for 2 hours then came to know interviewer has not reached. Interview has been scheduled 2nd time and again waited for 1 hour then couple of interviewers arrived and only 15 mins discussion done. HR told they will get back to me. But I didn't got any feedback. I called up the HR couple of times but she didn't responded.