BIOTRONIK interview questions

Friendly telephone discussion with the hiring manager, he asked about my background, some typical interview questions (see below), about my experience, etc. The interview was arranged by a headhunter, and although the HM was positive about the call, there was no feedback even after multiple trials by the headhunter to contact HR even after 2 months after the call. Very unprofessional. Based on this, it seems they do not value an individual (and their time) in the company.