Idp Ielts — Disorganization / Unfriendly attitude

Firstly, according to the schedule we were supposed to be at the centre at least 20minutes sooner, but even after 40minutes, I was waiting there while the authorities were preparing computers for the video call. When the exam started, the examiner's attitude was not appropriate and she seemed to be angry (which I am assuming might be due to the delay). In the first part, I asked her to repeat a question, though the question was repeated, she did not let me answer it and immediately interrupted me for the next question. Moreover, during the exam, she warned me several times not to touch a pencil or paper, while there were nothing near me. Finally, in part 3 when I expressed my idea about the topic she judged my opinions just after the answers and in that way it was really hard to concentrate.