wearereasonablepeople interview questions

I applied online and interviewed by two designers. After the technical interview they immideatly assigned me a challenging design task. I submitted the task result and received another email after 1 week for cultural fit interview. After completing the cultural fit interview they mail me again after 2 weeks where they was very positive about me and promised that they will get back to me with the job offer details within a week for sure. I've waited for another 14 days to hear from them by sending following up email but they didn't reply and almost disappear. Yesterday I sent another following up email and later I received a very strange reply from them where they was regretting & apologising with some very strange causes for making early promises to offer me the job and now they don't want to offer me the job which I found out very unprofessional & unreasonable. Truly they don't have any intention to hire experts!.

The interview was nice, I was asked a couple of questions regarding my experience with visual and UI design. Both interviewers were very friendly and made sure their questions were clear. All of the questions asked by them were related to design.