It was lengthy process of 5 rounds but they cancelled 5th round without telling any reason and didn't give reason to not to get further... I qualified 4 interviews.. Just before 2 hours for 5th interview they said it is cancelled

It was not worth it. I got an opportunity to apply for this position through a certification course in Investment Banking. I received a call from the HR which was a kind of telephonic interview. She told me that she will schedule an interview tomorrow and will send me the documents from where I can prepare. Now I kept waiting and refreshing my gmail but I never received a mail. On the next day, I received a call from the Interviewer himself that he was waiting for me to join which was shocking for me and I told him that I didn't receive any mail so the interviewer asked if I could give it now. I was unprepared as I thought I was not selected before that's the reason I didn't receive any interview mail but I didn't deny and asked him if he could give me 5-10 mins and I can appear for the interview. The interview went okay. It was half and hour and somehow I felt it went positive. Then after 2 days, I received the call from the same HR whether I had my interview or not. I told her that yes it happened but I faced a lot of trouble to which she was completely neutral. She told me she will get back with the feedback after she receives it from the interviewer. After 2 days I received a missed call from that HR so I quickly called her up 3-4 tines but her phone was continuously busy and even after 1-2 rings she didn't pick up. Later on the same day, this position was again available on LinkedIn job post and I received a mail from my Investment Banking placement coordinator that I am not selected. This was a complete unprofessional behaviour from the HR side and I am happy that I wasn't selected. I won't work for such a company who are so careless themselves and who like to waste the candidate's time.