Sorry About the Mistake in Invoice

Company Letterhead

{{company_name}}

{{company_address}}

Phone: {{phone}}

Email: {{email}}

Website: {{website}}

Date

{{date}}

Recipient Information

{{customer_name}}

{{customer_address}}

Subject

Apology for Invoice Error - Invoice Number: {{original_invoice_number}}

Salutation

Dear {{customer_name}},

Apology and Explanation

Please accept our sincere apologies regarding an error on your recent invoice, {{original_invoice_number}}, dated {{original_invoice_date}}. We acknowledge that an inaccuracy occurred in relation to {{nature_of_error, e.g., 'the amount charged for services', 'the quantity of goods supplied', 'the VAT calculation'}}.

Upon review, we have identified that the mistake was due to {{explanation_of_error, e.g., 'a data entry error', 'an oversight in our billing system', 'an incorrect product code being applied'}}.

Resolution and Corrective Action

To rectify this, we have {{action_taken, e.g., 'issued a revised invoice', 'processed a credit note', 'updated your account balance'}}.

The corrected invoice, bearing the number {{corrected_invoice_number}} (if applicable), is attached to this letter for your immediate reference. The correct amount payable is now {{corrected_amount}}.

If you have already made payment based on the incorrect invoice, please contact us at {{phone}} or {{email}} to discuss the necessary adjustments or refunds. We aim to ensure this process is as smooth as possible for you.

Assurance and Future Commitment

We understand the frustration and inconvenience this may have caused, and we appreciate your understanding. We are taking steps to prevent such errors from reoccurring in the future through {{preventative_measures, e.g., 'enhanced quality control checks', 'staff training on billing procedures', 'system updates'}}.

We value your business and are committed to providing you with accurate and reliable service.

Closing

Thank you for your continued support.

Signature Block

Sincerely,

{{your_name}}

{{your_title}}

{{company_name}}