Trustpair Ruby Developer interview questions

I went through 4 different stages of recruitment including technical challenges and case study talks. The code challenge and technical interview were great and I really enjoyed the process till this moment. I even talked with CEO and then again with the developers. The communication was poor - on our last call they decided that I will join a different team than we talked about throughout the whole process, and it would be fine for me but no one told me about it earlier. In the middle of the call, I realized that we talk about a similar but different position. I would not write all of this but in the end, they ghosted me, I think it's not ok to ghost a candidate who went through all of their recruitment levels and spent +10 hours in the process.