Subject: Balance due on a paid invoice
From: "Michael B" <[email-masked]>
To: <[email-masked]>
Date: Fri, 24 Feb 2017 11:27:57 -0500

Hello.
I received an email today that there is a balance due on a shipment that was already paid. Please explain what the discrepancy is. We were quoted one price and paid that. Your prompt response is greatly appreciated.
Thank you,
Michael B
LLPS