Was contacted by recruiter via email and had 3 stages of interviews, none of them with HR/recruiter so no one presented the company. Interviewers seemed not to have communicated between each other and each interview was not a step forward of the previous one. First interview was a screening with someone from the team, second interview was a language assessment and the last one was interview with the hiring manager. Between the interviews I had tasks which took a lot of personal time, the first one took me a full day. I had to book the interviews through a calendar for a time convenient for me but one of the meetings got rescheduled without my consent. The first two interviews went fine but the hiring manager was someone around his 20s,he was negative ane rude since the beginning and during the whole time he was trying to highlight my lack of experience in working professionally with my native language. In a way that demotivated me completely. He did not ask anything about my skills. He didn't even once look at the camera. He tried asking me a question to evaluate how I'd approach a scenario but unfortunately his question was related to their internal processes, so I got really confused on what he wanted me to respond. After the entire process I didn't get any reply back on my application, not even a rejection despite the time spent through the interview journey and despite the efforts on the home task. I contacted the recruiter after a month just to know if I shouldn't consider the role any more but I never received a response. It's very unprofessional not to consider a rejection, especially when someone dedicated dozen of hours on this interviewing process.