ElevenLabs interview questions

I recently had an interview loop. The HR interview went well, and the coderpad also went well. They said they would schedule two technical interviews, one leetcode-style and one ml system design, and that they would inform me after the leetcode-style one if anything was amiss so they would cancel the ml system design one. However they only scheduled the leetcode one, and I solved the question optimally, giving two possible solutions to it. The interviewer even told me I solved it. Then they just ghosted me, without scheduling the ml system design one. I waited and wondered if they would come back to me, and after not receiving a response for a week, I followed up with the original recruiter. I haven’t received any response despite my follow-up. Whether due to oversight or some other reason, it’s unprofessional and reflects poorly on their process. It's been weeks since the interview and not only have they not replied, they also have not scheduled the second interview. Poor communication and follow through about the interview process has really given me a negative impression.