[Date]
[Recipient Name]
[Title]
[Company Name]
[Street Address]
[City, ST ZIP Code]
Dear [Recipient Name] :
Your inability to complete on time our order, reference number [P.O number] , placed on [date] , has left us with no choice but to cancel the entire order. We regret that we cannot extend our deadline any further. Business needs dictate that we must have this order completed elsewhere.
Sincerely,
User
[Title]