Ralali.com Backend Developer interview questions

I haven't seen a more unprofessional interview process. First they call you for a F2F interview and tell you to solve an assignment. Then they make you wait hours before code submission and even at the day, it doesn't happen and you get to know that there is just one interviewer taking all the interviews be it front end, Android, ios or backend.Then, for formality the interviewer takes one round and isn't even listening to what you say. Don't go for the F2F interview, I have never wasted more time in my life.