To cancel an order - for reasons beyond your control
[Date] [Name] [Address] Dear [Name] We regret we must cancel order [number], dated [date]. We informed you quite clearly that these [product] were required by [date]. As they have not arrived at the time we requested we have had no alternative but to purchase elsewhere. We trust that any future order will be treated with more care. Yours Sincerely [Your Name] [Your Title]