Here's a sample to help you write a complaint letter about a product or service. Forms ; Complaint Verification.PDF ; Summons with Notice. How can I file a complaint from a company that gives poor customer service? FREE complaint form templates that you can edit and use online, including your website. âś“No coding is required. Review and use these sample customer service email templates to improve your customer experience strategy. Click the Direct Messaging icon at the top right of the page, click on the pen and pad icon and enter Xfinity Support in the "To" section of the chat. Use this free template to efficiently manage complaints, enhance service quality, and foster stronger customer relationships. Download and complete the Attorney General's Office Complaint Form.