The world’s first known customer complaint: Nearly 4,000 years ago, a man bought low-quality copper, complained to the seller on a clay tablet, and created the world’s oldest known customer complaint

A nearly 4,000-year-old clay tablet details Nanni’s complaint about poor copper quality. This ancient Mesopotamian text describes a formal business dispute over unsatisfactory goods. Nanni expressed disappointment with the product and anger at the merchant’s poor service. The tablet shows that customer disputes are not a new phenomenon. This historical document highlights early trade practices and consumer expectations.