KLDiscovery Data Engineer interview questions

Had one telephone call and two face to face interviews. At first interview was interview by two employees and was given SQL & C# test. Second interview was department head who wasn't even prepared for meeting with me. Between interviews I was given a different job specs. Interview process was chaotic. Day after I send a thank you note to interviewers. Company didn't even had a curtesy to notify me back. I have never heard back from them again.