Rule reminder

A formal Italian letter of complaint follows a strict structure: (1) INTESTAZIONE — sender and recipient details; (2) OGGETTO — subject line summarising the complaint; (3) ESORDIO — formal opening referencing the context; (4) ESPOSIZIONE — factual account of the problem with dates, order numbers, or contract references; (5) RICHIESTA — specific, reasonable demand (risarcimento, sostituzione, rimborso); (6) FORMULA DI CHIUSURA — formal closing ('In attesa di un Vostro cortese riscontro, porgo distinti saluti'); (7) FIRMA. Language is formal, factual, and non-aggressive.