Animaker Python Developer interview questions

One of the poorest interview which I ever had. Because of the interviewer's attitude, I thought of not accepting the offer. First-round is an hackerrank test, The second round was a technical discussion, The third round was with CEO. Not a professionalism in interviews, the interviewer came late and instantly started with tell me about yourself, not even a greet. The way of questions placed was rude, and the CEO round, he won't even question about your interest and experience, just asking question like he was on catching a train. If you call HR for feedback, they won't even attend. Worst interview panel and process. If they treat candidates like this in an interview, how will they treat them when onboarded.