I feel like whenever I've gone into a bank to see a human teller for whatever reason, they've either been:

A. Super enthusiastic about their job, happy see to and talk to me, and generally interested in whatever request I have that's weird enough to prompt me to come in to see a real person.

OR

B. Mad at me for even walking in the door. They act like me asking them for something weird like $2 bills is the end of the world and its going to be such a pain in the ass for them to help me, even though I'm probably the only person to walk in the door in the last 15 minutes.

Why is there never any in between, is it just because of the types of people who are attracted to such a job?