Wayfair Business Intelligence Analyst interview questions

I could not complete all the steps due to unprofessional interview process management. Two different HRs contacted me. After I shared my availability for the next interview, they sent me 2 different emails which were not related to my interview process. I asked for clarification about the process and send me the correct slot, but I did not get an answer for 4 days. In the end, HR call me and said all of a sudden they decided to hold the hiring process for this position. I spent 2 days on the case study and this is really unprofessional. I had concerns about the company because of having a low rating on Glassdoor but now understood why people are complaining that much. 1- Codility Challenged -- passed 2- HR screening call -- passed 3- Hiring Manager -- passed 4- Case Study -- delivered but the position on hold