BRAIN CORP Autonomy Engineer interview questions

The team sent me a coding interview which took a few hours to complete and clean up. There was no recruiter call, briefing about the hiring process. I uploaded the code to their server within a few days and had close to 100% accuracy on the task. They didn't get back to me for almost three weeks and then sent a mail requesting me to send it again as they couldn't "find" it. Then, proceeded to send a generic rejection and ghosted me when I asked for feedback. Given the Glassdoor reviews about Brain Corp, I think their objective is to sample free solutions from potential hires. Adding on to the other reviews, beware of this company and proceed with caution. Not only are they slow, unclear and unresponsive, but they also expect you to invest time into their poorly designed hiring process and give no feedback in return.