Amazon Vendor Manager interview questions

Standard for Amazon behavior questions like "tell me about the situation when you not only met but exceed expectations". Proces is clear but everything depends on the interviewer. How they understand your examples, how they will write the summary of your answers. 4 interviews and at the end information they decided not to move forward but can not provide any feedback. Lack of feedback after 4 hours of interviews in company where one of the leadership principles is lesson lear / learn and be curious seems insincere.