Biogen Director Role interview questions

I applied for two different positions at Biogen in the past few months. I had a scheduled initial screening with recruiter for both positions. The calls went very well, good information shared, high level of energy and interest on both sides. Each call ended with the recruiter explaining the process and next steps. Both times, I never heard back from the recruiter. Of course I followed up with each after a week and never heard back from either! If the recruiters - the face of this company to prospective employees - can act so unprofessionally and with such disrespect to a candidate's time and energy (mine in this case), why would anyone work for such a company!