> "I found their interview approach a bit of a turn off so I did not proceed to the next interview and ignored her emails ", this just shows a lot of immaturity.
I believe you should treat others how you want to be treated. FYI, recruiters do not usually follow up with rejected candidates and many are unresponsive. It's their way of telling candidates they are no longer interested.
When I interviewed for Google the recruiter was really nice and called to tell me that I didn't make it. I also gave her feedback on what I thought went wrong in the interview and what was wrong with their interview process. I don't know how the ones at Facebook are, but my recruiter did her job well and I appreciated that, even though some interviewers messed up.
I believe you should treat others how you want to be treated. FYI, recruiters do not usually follow up with rejected candidates and many are unresponsive. It's their way of telling candidates they are no longer interested.