CME Group CME Number interview questions

Contacted by CME directly. Process was simple, a quick call after which they brought me in for an in-person interview. Both stages were fine, pretty straightforward. However, despite the in-person interview and a promise to hear back after a week, nobody ever bothered to contact me again! After reaching out to them 4 more times to see whether I was still in the running, I gave up. Nothing, not even a quick note that I was out or anything. Apparently CME has 0 manners (or at least their HR), or incredibly poor internal communication. Frankly, if they were to contact me again I would tell them to shove it, since I wouldn't even want to work for a company that treats people like that.