Hitachi Vantara interview questions

The process starts with a call from a project manager, asking basic questions like how the process works, what role you play in it, etc. Got design assessment that needs to be completed in 4days. Deliverables were User Persona, Questionnaire, IA, Task Flow, User journey map, wireframe, UX report, etc. I had to work at night after my shift. I completed the assessment and shared it with HR, didn't receive any reply from them, after many attempts I have lost hope. After 3 months I got a call from HR asking are you still looking for some opportunity?. They scheduled my interview, I had to explain my design to their leads. The next day got a call from HR that you have cleared the interview, we are taking your profile ahead. Salary discussion, that I had already mentioned my expectation, now they wanted me to negotiate on it, after completing all these steps. As I have already spend a lot of time preparing for the interview and assessment, I have agreed to their offer. After two days, got a mail that I have to give one more round of interview that they will check my attitude towards my career and behavior with colleagues, I was like What the hell!!. I had no options though, Got my interview scheduled and they have noticed some negative things in it so they wanted to do another round of interview and one more after that. After three rounds of interview, got a call from HR that I have cleared all the interviews and you are selected, we will share the offer in a week, usually, it takes 3 days but because of covid, it may take a week. I have shared all my documents with BGC and other documents which I had to fill and that's it. It's been six months I have been following up got no response from them, no mails, no calls, nothing.

The interview was conducted at their Tower Bridge offices. I spoke with two different people, one making a personal assessment, the other a technical. There was a combination of standard and unusual questions.