__________ (Name of the Customer)
__________ (Customer’s Address)
Date: __/__/____ (Date)
Subject: Delay in work
Respected Sir/ Madam,
I am ________ (mention your designation) and I write this letter on behalf of ________ (name of the company) to extend our sincere apology for the delay that you have suffered for the order you have placed on __/__/_____ (date) bearing order ID number ________ (mention order/service number).
I apologize for the unprofessional behavior that you have faced. Respected, the order was delayed due to the reason _________ (mention reason) and ensure that the same would never be repeated in coming future.
I believe you would accept my sincere apology. We look forward to serving you better and have a good business relation with you in the coming future.
________ (Contact Number)