Recast Software Solutions Engineer interview questions

Applied on LinkedIn, Received call from HR, Was asked questions of my day to day routine, how i used the recast tool, SCCM experience etc.. Second round: With the manager, went through situation based questions, tools and technologies around the role, few customer centric questions Third round: With manager's manager, scenario based, customer facing, I was told I had all the skills, good communication, next steps would be meeting with the Director. Now, here they comeback saying I don't have SALES background, I don't understand why was that not considered when you set up three rounds of interview, It was waste of my time and yours. Do your work better next time