We don't really know who got letters. This forum and the Facebook group isn't everything! Just places people have found along the way.
I can't speak to why you didn't get in. But if this is your third year, I highly suggest reaching out to someone and having your stuff looked at. See what you can change or add or do better with. An interview is a big deal. So you are clearing getting something right. Also suggest casting your net really wide. I worked with CRNA method because I wasn't a traditional student or applicant. I used a few other services for my essay and resume. And worked with few people on my interview stuff. Someone said it earlier- but a no isn't a no never, it's a not right now. If it's truly something you want- reach out, keep working, keep applying. You'll get there