Subject: Urgent Complaint about Defective Product — Long-Time Customer Seeking Resolution [Your Name] [Your Address] [City, State, ZIP Code] [Email Address] [Phone Number] [Date] [Customer Service Department] [Company Name] [Company Address] [City, State, ZIP Code] Dear [Customer Service Department], I hope this letter finds you well. I am writing to express my deep disappointment and frustration as a long-time customer concerning a defective [product name] that I recently purchased from your company. With regret, I inform you that this is not the first time I have encountered quality issues with your products, and it has forced me to resort to this formal complaint. I have been a loyal customer of your brand for over [number of years], and throughout this time, I have valued the reliability and durability of your products. However, this recent experience has shaken my confidence in your company and its commitment to quality. On [date of purchase], I purchased a [product name] from your authorized retailer, [retailer's name], expecting the same level of excellence that I have previously enjoyed from your brand. Unfortunately, after only [brief description of product usage], I immediately noticed severe defects in its [list of specific defects]. These defects render the product unusable and fall significantly short of the quality standards I have come to expect. I cannot emphasize enough how disappointed I am with this situation. Considering my loyalty and long-standing relationship with your company, I genuinely believed that this unusual occurrence would be addressed with utmost urgency. However, my attempts to resolve this matter through the [retailer's name] have been met with unhelpful responses and evasive behavior. As a valued customer, I request that you swiftly take action to address this problem. I trust that your team will investigate the issue thoroughly and provide me with a replacement [product name] of the same quality as originally expected at no additional cost. Additionally, please assure me that the necessary measures will be implemented to prevent such incidents in the future, thus preserving your brand's reputation for excellence. Please note that I anticipate a prompt resolution to this matter and would appreciate hearing from you within [reasonable timeframe, e.g., 10 business days] regarding the steps you will take to rectify this situation. Kindly acknowledge the receipt of this complaint via email or phone, using the contact information mentioned above. Furthermore, please be aware that failure to address this complaint adequately will undoubtedly affect my perception of your brand. I am hopeful that we can swiftly resolve this matter to my satisfaction and that of other customers who may encounter similar problems in the future. Thank you for taking the time to read and consider my concerns. I look forward to a prompt and satisfactory resolution of this issue. Yours faithfully, [Your Name] [Your Customer ID if available]