Meta Product Support Specialist interview questions

Upon emailing me a rejection for a different role, a recruiter copied a different recruiter and role that they thought I'd be good for. It was the Prod Spec role. I didn't have experience in product support, but the role looked mostly analytical so I moved forward. First call with the recruiter, then a call with hiring manager. She wasn't available, so I spoke to someone on a different team who gave me general info on systems and teams, but not role specific. Onsite interviews included 4x30 minute sessions, 3 being scheduled as video call due to the interviewers being remote. The video calls hurt my performance and added awkwardness because they show you in full body view and were distracting. The team members asked a few technical/analytical questions, and the hiring manager asked vague questions about why I was a good fit and what did the role need to contribute to Sales and Engineering. Having no direct experience, or understanding of why HR put me in for this role, I answered as best I could, but struggled to know what she wanted. The one in-person meeting went well: he asked prioritisation questions with context, and spent an hour with me. Recruiter was brusk about my request to send thank you notes, and in the rejection email basically said the team felt I was sub par in analytical/critical thinking skills. No encouraging note of good will or try again. Frankly, the only analytical questions I was actually asked were on probability and prime numbers, not things that even appropriately relate to the role. No SQL or Excel test, as other reviewers mentioned for this role. The whole process felt disorganised and I got different explanations about the team from each person. The recruiter pushed hard on salary talk early on, and set low expectations. I also wasn't prepped on what to expect with the onsite, like other companies do. Oh well, not a good fit for me anyway.

Had a phone screen with the recruiter, which I thought went well. She promised to follow up 'soon'. 2 weeks go by and no word. She apologizes for delay and explains that they are doing headcount. I ping for an update, and receive a reply that the role had been filled - 1 week later. Very unprofessional, poor experience. Waste of my time and energy.