Netcracker Technology interview questions

There were 3 technical rounds and 1 HM round. 3rd technical round was taken by the HM SP. I got to know about his bad attitude then only, and the kind of questions he was asking I got an understanding of their work culture as well. I passed the 3rd round, and for the 4th HM round as well he(SP) was only taking the interview. I forgot the name of some tool and he started shouting and behaving unprofessionally. I kept my cool even though I already had an offer from a better company. Even a junior level person like me knows how to talk to someone and here a person with so much experience and at such a high level doesn't have an understanding of how to talk to someone. Anyway, I was rejected in the HM round, and when I told about the attitude of the HM to recruiter and said I will be leaving a review about this on glassdoor. He acted like it didn't matter to them and they didn't care. I learned about this company afterward through a friend, that their culture is very bad. I will not suggest this company to anyone, especially under SP as HM."