DreamzTech Full Stack Developer interview questions

The most unprofessional interview (process & questions) I faced in my career. I was called for the full stack developer (php, mysql, angular) position. After waiting for 1 hour 10 mins, I was aked to go to the interview room. The person who was taking my interview, had no idea what to ask. Then the technical round started with no such technical questions. He hardly asked me 3-4 questions which were nowhere related to the profile I was called for. No question was asked either from php, mysql or from Angular. It was clearly understood that they had pre-intention to not to hire me. Then what was the point to waste my time?