Subject: Request for Information — Increase in Bill Amount for [Service/Utility] [Your Name] [Your Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Position] [Company/Organization Name] [Address] [City, State, ZIP Code] Dear [Recipient's Name], I hope this letter finds you well. My name is [Your Name], and I am writing to request information regarding the recent increase in my bill amount for [Service/Utility] provided by your company. I have been a loyal customer of your services for [duration] and have always been satisfied with the quality of service and the reasonable billing charges. However, upon receiving my bill for the month of [previous month], I noticed a significant increase in the amount compared to my previous bills. I trust that your company maintains transparency and strives to offer competitive prices to its customers. Understanding this, I believe there may have been a mistake or an unforeseen circumstance that caused this sudden increase in my bill amount. I kindly request you to provide me with a detailed breakdown of the charges on my bill, explaining the individual components and their corresponding costs. Additionally, I would appreciate any additional information you can provide regarding any recent changes or tariff updates that may have resulted in this increase. I value the services your company provides and believe in maintaining a good customer-provider relationship. Therefore, I kindly request prompt action to address my concern and provide me with the requested information as soon as possible. Please send your response to the contact details mentioned above. If the increase in my bill amount was indeed accurate, I would appreciate an explanation detailing the reasons behind it. It would help me understand the factors contributing to this change and enable me to make an informed decision regarding my future usage. I trust that you will give due attention to my request and provide the necessary information promptly. Thank you in advance for your prompt response and cooperation. I look forward to resolving this matter amicably and continuing our long-standing business relationship. Yours sincerely, [Your Name]