Zalando Senior Microstrategy Developer interview questions

I passed five different interview stage. Codility test Sql technical interview HR interview Team Manager interview Microstrategy technical interview Everything was very good until Microstrategy technical interview. In this interview, he asked me few very specific questions about Microstrategy and i gave right answer and then the atmosphere in interview change quickly and he told me that i can not hire as senior engineer. He told some ridicilious reasons. In this time i have succesfully finished 4 stage in SENIOR MICROSTRATEGY ENGINEER vacancy an also i sucessfully passed 6 different Microstrategy certification exam in one year. Microstrategy gave me this title. I think this person has different plans because i am %100 sure that i know Microstrategy better than him. Good luck zalando with him :) please do not waste other engineers time with this kind of unnecessary person.