Inoventures interview questions

I spent close to 6 hrs working on an analytical problem and I got an email saying, I did a decent job and I will be interviewed by the founder and the person who had mailed the problem. When asking about the details of the role or the background, I was provided no visibility that it would be with a Government organisation and that the case data was real data and I am assuming this that it was a way to get free work done. The founder was very arrogant and aggressive and the conversation was a monologue.