Flex A.I. interview questions

I received an interview invitation. The HR person scheduled an interview. The interview was fine, and she asked me to submit a take-home test. I spent a lot of time and effort on the test and submitted it on time. However, after I submitted it, NO responses, NO feedback at all. I followed up with the HR person. I got the results. Then I politely asked for feedback. NO feedback. I have submitted the applications twice, and they keeping the same in an unpolite and indifferent manner. Not showing respect for the applicant's dedication and effort. Not a great firm to start your career. Not recommended.