ToXSL Technologies Developer interview questions

So many rounds, without any response at the end. They called me for 1 hour interview, but ended up wasting my whole day in taking different technical and other rounds. After the interview they assured me that they will call me in the evening, but I neither received a call nor any email from them regarding feedback. They NEVER give a feedback to the candidate after the interview. Its my personal, 2 times experience.

HR screening-Telephonic, Aptitude test-MCQ, Technical test - one-on-one, System test - 30min to 45 mins,HR round,then CEO/ Manager round (another kind of Technical round),then at last salary discussion with HR.