Anything over $10k has to be reported. It’s up to the teller to file a CTR (currency transaction report) and they are required by law to do that. I used to be a teller and I hated doing those but I couldn’t hand the cash over until the CTR was done. That’s for any cash transaction over $10k, deposit or withdrawal. We were also trained to ask questions if we felt like something suspicious was going on and we could file a suspicious activity report if anything seemed fishy like a drug dealer or something. Don’t get mad at the teller, that’s just what their told to do to keep their job. Get mad at the system.