Topdanmark Software Engineer interview questions

I was given a JD of this position where it only mentioned Java. I went to the 3rd interview (technical) and they said that the position was 100% C#. It seemed like they did not want to proceed with the technical interview after I told them that I only had a few years of experience with C#. Wasted my time and their time. Wasted my annual leave as well. Format: 1. HR interview with INSCALE 2. Manager Interview in office 3. Technical Interview