1010data Analyst interview questions

Resume got short listed for the role. I was asked to choose a time slot for a technical phone interview. They asked me to have a laptop handy as I'd need it during the interview. I gave them 3 slots and was confirmed for one of it. The day before the round, they send me an email saying the person won't be available for the interview and was asked to choose slots for the next week. I sent them that and haven't heard anything. It's been 2 weeks since then. Very unprofessional and bad experience. Avoid this company at all cost.

Process 2 months. Three rounds. One phone technical, one take-home assignment and one on-site interview. Questions including brain teaser, data structures, data bases queries, easy algorithms. Very slow on the feedback. I think they are comparative admission. They won't send decisions until all candidates are processed.