Dear [Recipient's Name], I am writing to extend my sincerest apologies for the error in our recent advertisement that appeared in [Name of Publication/Website]. We deeply regret any inconvenience or confusion this may have caused, and we take full responsibility for the mistake. First and foremost, please allow me to clarify the correct information. The correct date for our upcoming event in Nassau, New York is [Correct Date]. We apologize for any miscommunication that may have occurred due to the incorrect date displayed in the advertisement. At [Company/Organization Name], we pride ourselves on providing accurate and reliable information to our valued customers. We fully understand the importance of rectifying any errors promptly, and we have taken immediate steps to ensure that a similar mistake does not happen in the future. To make amends for this oversight, we would like to offer our valued customers the following options: 1. [Discounted Admission/Participation]: We would like to extend a [X]% discount on admission or participation fees for the event to all customers who were affected by the error. This special discount will be valid for [X] days from the receipt of this letter. Please present this letter at the event to claim your discount. 2. [Bonus Inclusion]: In addition to the discounted admission, we would like to offer a complimentary [Product/Service] to all affected customers as a gesture of goodwill. This bonus inclusion aims to compensate for any inconvenience caused by the error in our advertisement. Please note that all affected customers who wish to avail themselves of these offers must provide proof of the advertisement received, such as a screenshot or a physical copy. This will help us ensure that only genuinely affected individuals benefit from this opportunity. Furthermore, we have taken immediate steps to correct the information to avoid any further confusion. We have contacted [Publication/Website Name] to rectify the error on their platform, and we are confident that the correct information will be promptly updated. Once again, we sincerely apologize for any inconvenience this error may have caused. We value your patronage and would like to assure you that we are committed to delivering accurate and reliable information in all our future advertisements. Should you have any further questions or concerns, please do not hesitate to contact our customer service team at [Customer Service Contact]. We are available [Days and Hours of Operation] to assist you in any way we can. Thank you for your understanding and giving us the opportunity to correct this mistake. We look forward to welcoming you to our event in Nassau, New York, on [Correct Date]. Yours sincerely, [Your Name] [Your Title/Position] [Company/Organization Name]