JBS Intern interview questions

Applied online. I received an email for a phone interview call a few weeks later. They had no specified roles listed on the internship and when I asked during my interview, the recruiter said she can not disclose which roles they are offering. Otherwise, candidates falsely say they want that role. This does not make sense. I tried to explain I would like to go to the data analysis domain and explained my projects and interests. Then again I asked, do you have any position related to my interests? She said she can not tell you. You will get an email regarding our decision. Received rejection a couple of days later. I feel like I wasted my time. I did company research, gave a 25-30 minute interview when they did not even have any position for that role! Only if they would have told me after I asked, I tried to explain my other interests!