MagicBricks Lead Android Developer interview questions

Got a call from the company HR for weekend interview in the office. First round was face to face technical round with Senior Android developer that lasted one hour. Core java, Android, Kotlin, problem solving and project discussion. Second round was technomanagerial round with hiring manager (around half an hour). Project discussion , problem solving. Then got a call from HR next week that she is checking with CTO for interview slot for the final round. After a week , she shared the interview schedule for CTO round. At the day of interview , she called to say that they have to stop the further process because they are looking for candidates from PRIMIERE colleges. Oh seroiusly, then what were you thinking till now ? Unprofessional behavior and waste of time. They are not sure themselves what they want to do.