Interrupt Your Closing Statement

I am working in a call center in a bank. 

Me: “Thank you for calling [Bank]. How may I help you?”

Customer: “Yes, I just need you to let [Banker] know I’ll be in today after five to sign some documents.”

Me: “Sure! Just so you know, we close at six this evening.”

Customer: *Rudely* “Don’t interrupt me.”

Me: “I apologize. How else may I help you?”

Customer: “What time do you close today?”