Chefling interview questions

Never ever will recommend interviewing in this company, they give you long assignment to make, i spent days making it and in the end they rejected me,it's totally fine that they rejected me but they should have told me the reason that what can be improved in your assignment, i have sent them multiple mails saying please correct me where i was wrong still no response, always stay away from interviewing such a company which does not appreciate your time.

Firstly, I was asked to solve an Ml assignment problem. In the next step, interview was held, in which questions regarding approach, algorithm, etc were asked. I got the results 3 days after the interview. I was selected.