Dassault Systèmes Software Developer interview questions

I gave 3 rounds of interviews (1 test, 2 technical) at 3ds. I felt they were descent interviews took by descent interviewers. Issue was there was no feedback. I mailed them, called them, people who referred me called HR, but no response. Why is it so hard to give response to the people who took hours from their time to give interview for your company? I probably won't appear for another interview. HR department is too lazy and they don't care at all!

3 rounds were taken Questions related to your technical knowledge Different puzzles were asked to check logical ability Questions on geometry and catia Questions on programming skills (java, c++) HR round Face to face interview. Positive experience