Innover Digital interview questions

I was the first candidate to get interviewed for this role. They themselves did not know what exactly is the role they were interviewing for. There were 2 rounds and I cleared the first one, and the second one also went great but later I was told that they have updated the JD and my profile does not match with the new JD. The JD I received and the updated JD were completely different. It felt like I was their trial person so that they get a clarity about the JD. It was highly unprofessional of them.