AiDock Full Stack Developer interview questions

Bad process. I was interviewed with the VP of R&D for a Full Stack Developer position. He asked me some very basic questions and then told me that I need to do a very complex home assignment with Lua (the position doesn't have anything to do with Lua) and React, combining Docker and SQL DB. It took me almost a week to finish the assignment and send it. A week has passed and they didn't reply, so I've asked for feedback, and STILL NO REPLY.  After several attempts to reach them, HR told me that the company decided to close the position (AFTER I'VE FINISHED THE ASSSIGNMENT). Stay away from this company, ONE OF THE WORST EXPERIENCES I'VE HAD!