Ipsos Data Scientist interview questions

Got HR call, the person seemed very friendly, and left good impression. Then followed the 1st round. It was horrendous: multiple interviewers, neither of them spoke much, just starred. Neither of them prepared for the interview, or read my cv, or even had a set of questions. In addition to minimal talking, when one was trying to speak - used poor English and unstructured sentences, making it tricky to understand what he was trying to express. In general, it was painful to listen and completely killed my will to engage with them. Could you invest in providing for the interviewers interviewing skills training? Good communication in the key language the team uses (e.g. English if in UK) would also help. If only one person asks questions, don't invite an audience of others who will log in with video and just keep staring at you. Only pick people who can interview/communicate and ensure that they undertake at least minimal preparation. Given the above, decided not to proceed.