Apology to Customer for Billing Error: Charged Too Little [DATE, ex. Wednesday, June 11, 1998] [NAME, COMPANY AND ADDRESS, ex. John Smith XYZ Inc. 1234 First Street Suite 567 Anycity, Anystate 85245] Dear [NAME, ex. John Smith], Since we value your business greatly, I have been inspecting our invoices to ensure that we have made […]
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