Subject: We’re sorry for the delay in the delivery of your product.
Please accept my sincere apologies on behalf of our company [COMPANY NAME] for the delay in the delivery of your product.
We completely understand your frustration due to not receiving your product on time and are truly sorry for the inconvenience caused. We have escalated this issue to the highest level and are making arrangements to get your product delivered to you at the earliest.
We appreciate your continued patience and thank you for bringing this to our attention. We’re always striving to be quicker with our deliveries and feedback like yours will help us greatly.
Please write back to me if you have any other questions.