Disrespectful to people's times and efforts. I went through multiple interviews and was not offered a position in the end. I accepted the results but when asked for feedback, HR responds with "there is nothing more I can share with you". A more authentic and generic response would have been much appreciated after asking someone to jump through 4 rounds of interviews.

Three stage interview, first two stages went amazing but the last stage was a presentation. I couldn’t shake the feeling that the manager did not like my former employer because she would say things like, “well maybe that’s how it’s done at X but we don’t do that here.”