IBM Software Developer interview questions

Never got to speak to a recruiter. Before they even phone screened me, they sent me a 3 hour coding test. I thought this was a bit absurd as this is a long amount of time to spend so early in the process but eventually decided to do it. I completed it and passed all the test cases, except a couple efficiency ones. Today I got a pretty automated message declining me from continuing the interview process. After spending 3 hours of my time, they deny me without the decency of providing feedback. This is inconsiderate a true waste of candidates valuable time. I highly recommend avoiding interviewing for these positions unless the process improves.