SAP Developer Senior interview questions

Interview process involves stranded programming puzzles. i have only though the initial round which involves a teams call in which i was asked to answer two programming puzzles. i have solved most of them but was rejected

Initial recruiter call Tech call with the lead engineer for an hour Behavioral with manager, VP and principal Final tech call All together 7 rounds with 7 people They mention that they are preparing offer initially and then after few days they say they found someone else. This absolutely does not make any sense. I wish they do not tell anything until final offer has been prepared. Definitely the worst hiring team I have seen