Dear [Recipient's Name], I hope this letter finds you well. I am writing to address a recent cancellation that has taken place in regard to [specific service/subscription]. It has come to my attention that there seems to have been an error in canceling my [service/subscription] with [company/organization]. Detailing my concerns, I would like to highlight the incorrect cancellation that occurred on [date]. According to the cancellation confirmation I received, my [service/subscription] was terminated effective immediately. However, this decision was made in error as I had not initiated any cancellation request whatsoever. To rectify this situation, I kindly request that you review and correct this error promptly. I have been a loyal customer/member of [company/organization] for [duration/years], and it is disheartening to face such an inconvenience based on a mistake. I value the services provided by [company/organization] and have always found them to be reliable and noteworthy. Furthermore, I have attached copies of previous invoices and communication documents confirming my active subscription with [company/organization]. It is my hope that you will acknowledge this mistake and restore my [service/subscription] without any further delays. I trust you will understand the inconvenience caused by this incorrect cancellation and take immediate actions to rectify it. In addition to the restoration of my [service/subscription], I would appreciate any confirmation or documentation proving that my original subscription has been reinstated in good standing. It is important for me to have clarity and assurance that there will be no interruption or further issues with my [service/subscription]. If needed, I am available to discuss this matter further and provide any additional information that may assist in resolving it promptly. You may reach me at [phone number] or via email at [email address]. I kindly request your prompt attention to this matter and appreciate your understanding in this unfortunate situation. Thank you for your immediate attention to this matter, and I look forward to a prompt resolution. Sincerely, [Your Name]