HelloFresh interview questions

I apply for a position front-end developer in this company with Linkedin. I received an email describing all process for this position. The day of the interview the interviewer forget the time, I'm waiting for 15 minutes nobody calls me. After that I sent another email asking HR. The HR made me another schedule. When I received a call the interviewer was very angry and stressed. 7 minutes later he told me I will to call you on another day. After 1 day I received a negative email.

The first interview was ok, very friendly and relaxed. For the second step, I was asked to develop a project - which took me a lot of time, money and energy - and I had the feeling they led me to the wrong direction, to "trick" me and see my reaction while presenting the project. I don't feel that's very nice or honest, and it gave me a very bad impression of the company. Especially considering how much effort I put into the project and how careless their feedback e-mail was.