[Date]
[Name]
[Company and Address]
Dear ……….. [Name],
Regrettably, I must request that our order [Order Number, for 50 nos. of 10×12 sheets of drywall] be cancelled immediately. [Briefly State Reason, example As you know, the recent trim-carpenter strike has delayed construction and we will not require the drywall until the matter is resolved.]
Also, you are requested to refund the payment for the order of Rs. ………. as early as possible. Please acknowledge the receipt and contact for any concern / requirement. Kindly discuss about the mode of payment as well.
Please accept my sincere apologies for any inconvenience this may have caused you.
Thanking you,
[Name & Signature]