Wise interview questions

Had a first phone interview with HR and they scheduled a second one as a skype interview with a product manager. He didn't show up at the agreed time and I received an e-mail from HR 10min later rescheduling the interview for another week . At the interview I kept my camera on but the interviewer had only audio. His accent was very strong and his english was not very good, which made some questions very confusing. He used some swear words when talking about information in my CV, not in an offensive way but still very impolite. His questions were very specific to his daily work and he expected as a answers the way he carries out the activities. In one point of the interview he told me to 'forget everything that I have learned in my MBA', because 'that doesn't work in the real world'.