Applied online, had a conversation with British team and then waiting for HR from Mass team to schedule hiring manager round. This is where it all started, the guy from HR team just automatically sent you schedule links without giving you any information. I didn't even know if this is an HR talk or Hiring Manager interview. Followed up with HR 3 times in 10 days and got no responses at all. I finally had to schedule on that system and wait for another week for HR to confirm. During that week, I followed with 2 more emails and still no response. After the interview, the HR is gone. It feels like the HR team who works on your case is robot, they won't even talk to you or reply your emails. This is the most frustrated interview experience I've ever had.