Amazon Gerente interview questions

They kept on rescheduling interview dates and times and then had to do an interview with someone completely different who wasn't even that informed about the technical details of the role. Did 3 rounds of interviews with them and they kept on repeating the same questions. They wanted to go through another 4 rounds of interviews which had to be face to face in another country and wouldn't even promise me that they can do all four of them in the same week. After that they rejected me with no explanation.