Helixa interview questions

Had a phone screening, two on one interview, another one on one, then a group presentation. I was told that they really enjoyed it and I would hear back within the week. I have yet to hear back from them after over a month. I reached out to the HR rep 4 times and heard nothing and then spoke with the hiring manager again where I was told I would hear back soon. Still nothing and I find this extremely unprofessional. I would not recommend anyone waste their time. You have to spend multiple hours on the presentation using their software and they give very little guidance.