Calling About Calling

(I work at a customer service desk. I answer the phone with my usual greeting. The customer on the other line starts screaming.)

Customer: “WHY DID YOU CALL ME?!”

Me: “Ma’am, you called us… Was there anything I could help you with?”

Customer: “WHY. DID. YOU. CALL. ME.”

Me: “Did someone leave a message on your machine?”

Customer: “Yes. It was you. Why did you call me?”

Me: “Well, it wasn’t me personally. What did the message say?”

Customer: “It said I had an order ready for pick up. Why did you call me?”

Me: “It would appear you have an order… for pick up…”