Payment Source interview questions

It was a behavioral interview with typical questions. The interviewer was very nice and shared a lot about the company, not only what they are doing but also the company culture.

The interview process had three steps, a phone call than second round with the managers followed by a practical assessment. They were all really nice during the interview process. I was selected for the practical assessment round and they made me feel very confident about getting this position. But after the interview they kept delaying the results. At the end they gave me no explanation as to why I wasn't selected and sent me vague email explaining why they chose someone else. I spent 3-4 weeks for this interview process, it was all a waste of time and at the end no proper reason or response was given. The practical assessment presentation required so much detailed research and explanation and I regret putting in a lot of work as they did not even acknowledge.