The oldest known customer complaint, from around 1750 BC, is about bad copper.

1750 BC

A man named Nanni scolded the Ur merchant Ea-nasir for shoddy ingots and rude service; Guinness lists the tablet as the oldest complaint on record.

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The event

• The complaint to Ea-nasirc. 1750 BC · Ur, Mesopotamia. A man named Nanni berates the Ur merchant Ea-nasir: the Dilmun copper was poor, his servant was treated rudely and his money was not refunded. Leonard Woolley found it among other complaints about the same trader; Guinness calls it the oldest customer complaint.

18th century BC

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