Order Cancellation Letter

I would like to kindly ask you to cancel our order for [item name], which we made on [same date]. The order number is [xxxx]. It appears that we won't be needing it because [mention reason here].

I apologize for any inconvenience this may cause, but we didn't anticipate this situation. Please confirm that you received our cancellation request. Also, please refund our deposit. I have enclosed with this letter copies of the invoice and the receipt for your own reference.

Thank you for your cooperation

I have ordered [item name] from your company on [some date]. Your salesman promised [five] days delivery and yet I haven't received anything. No one even called to report a delay. I'm quite disappointed from this terrible service. This is definitely not what I expected.

Please cancel my order and refund my money at the earliest. My order number is [xxxx]. I'm waiting for a reply from your side confirming the cancellation of the order. Enclosed with this letter is a copy of the invoice for your reference. Additionally, you may contact me if you require more details.

I would like to kindly ask you, if possible, to cancel my order number [xxxx], which I placed on [some date]. Some unexpected events occurred and it seems that I won't be needing it anymore. I hope it's not too late to make such a request.

Please revert back to me at the earliest and let me know whether the order has been cancelled or not. I appreciate your understanding and I apologize for the inconvenience.

Thank you very much.