A letter inscribed in an ancient clay tablet, dating from 1750 BC corresponding to the period of Old Babylon, and currently at the British Museum, could be one of the oldest customer service complaint letter found. The complaint was made by a certain Nanni to Ea-nasir regarding the delivery of the wrong grade of copper ore after a gulf voyage and about misdirection and delay of a further delivery. The full translation, reportedly from the book Letters from Mesopotamia by Assyriologist A. Leo Oppenheim, is reproduced below. Nanni appears to be quite angry.