TrueMotion Data Scientist interview questions

I had one round of phone interview, next Skype interview and then the day long project which they I read in earlier posts. I was given a 6 hour window to complete and I completed in approx 4 hours. I answered all their questions and overall I thought I gave my best interview. However, today I receive email saying I wasn't best fit. This is not a specific answer after coming this far in interview process. I should have read the reviews and not apply to this position. This is total BS. Waste of time and energy.