Bad customer service

I am from Tembisa. I went to Kempton park to collect my child’s bank card and when I got there it was 16:50. The bank closes at 17:00. Modiba Makai( I’m not sure if she gave me the correct name because she was not even wearing her name tag) told me straight up she closed. I tried to reason with her to show I’m on time, I’m from work, all the way from Tembisa and it’s just to collect the bank card but she did not hear any and she closed the door in front of my face. Why would it write that the bank closes at 5pm when the workers decide their own time to close? Please help