Enactor interview questions

There was 3 round of interviews: initial 2h, task based + presentation, and a final interview. The first round was 2h constant questioning and decoding every role in the last 10 years. While the partners were quiet friendly some of their conclusion were a bit quick to conclude that I haven't worked on complicated enough solution. I didn't like the 2nd round where they asked me to work on a task. I proposed to be real task so they gave me one. Then they couldn't decide on the day of the presentation. I have spent 2 weeks of sleepless nights to prepare structural analysis on their flows, plan how to map, opportunities, customer journeys, interactive prototype and explained everything in a video for them to digest easily. For them to reply that they won't see me - not sure if they watched it either - got a reply in few weeks. Not even thanking me, no feedback, of course no payment either, no appreciation, A bit disappointed