Dapper Labs Solutions Engineer interview questions

The interview was fair and had a coding test in their cadence language and then a Google meet interview. The team was great and seems very engaged and talented. The process after the interviews, however was really unprofessional and poorly handled. After about 3 interviews, I got no response, days later after reaching out to the scheduler, since the in-house recruiter just completely ignored me even though I was instructed to go through her, I got an answer. It was no. Days later I got another email saying, actually they want to do a final round interview. I completed that interview then a day or 2 later I was told I would be getting an offer. The recruiter finally got back to me now (no mention of the previous ignored email). We had a call, and I was told I would have an offer either on Friday or the next Monday. We discussed start date, they asked for background checks, etc. The weekend passed, finally on Thursday I emailed after being ghosted a second time by the same recruiter (who had previously said she would get back to me Monday latest), finally she said, they changed their mind again, they wouldn't be hiring for the role at this time. It's fair if they didn't want to hire me, or perhaps decided not to hire at all for the role, but the recruiter could have the decency to follow through on her actions and at least give me a straight answer and respond when she promised. It was handled so unprofessionally and really turned me off to the company.