[Your Name] [Your Address] [City, State, ZIP] [Email Address] [Phone Number] [Date] [Name of the Company/Organization] [Address of the Company/Organization] [City, State, ZIP] Subject: Disputed Bill for [Service/Transaction] — Account #[Account Number] Dear [Company/Organization Name], I am writing this letter to dispute a bill that I received from your company/organization regarding a recent [service/transaction]. After carefully reviewing the charges on the bill, I have identified several discrepancies that need to be addressed and resolved. Firstly, I would like to discuss the [specific service/transaction] dated [Date] for which I was charged [Amount]. According to my records, the agreed-upon price for this service/transaction was different, as discussed with your representative [Representative's Name] on [Date]. I have attached the related documentation supporting our agreement for your reference. Secondly, I noticed an additional charge on my bill for [Item/Service] amounting to [Amount]. To the best of my knowledge, I did not request or receive this [item/service]. Therefore, I would like to request detailed information on how this charge was incurred and ask for its immediate removal from my bill. Furthermore, I have been billed a late payment fee of [Amount] for the past due balance, despite the fact that I have always made my payments on time. I have attached copies of my payment receipts for the past [number of months], clearly showing that my payments were made within the specified due dates. I kindly request that this erroneous late payment fee be reversed accordingly. In light of the above discrepancies, I would appreciate it if you could promptly investigate and rectify these billing errors. I expect a detailed explanation of each charge along with accurate documentation supporting your claims. Moreover, please adjust my bill accordingly to reflect the accurate charges and remove any disputed fees. Please note that I have been a loyal customer of your company/organization for [number of years/months] and have always been satisfied with the quality of your [products/services]. However, this disputed bill has caused me significant inconvenience, and I kindly request your cooperation in resolving this matter promptly. I expect to receive a written response addressing each of my concerns within [timeframe, e.g., 14 days]. If I do not hear back from you or if the issue is not satisfactorily resolved, I may have no choice but to seek assistance from relevant consumer protection agencies or consider other legal remedies available to me. Thank you for your attention to this matter. I hope we can swiftly resolve this dispute and maintain our positive business relationship. Sincerely, [Your Name]