Use this form to file a complaint against a business. A copy of the complaint and submitted materials will be included with a request for a response.Here's a sample to help you write a complaint letter about a product or service. This form is only for consumer complaints. First of all, you should write your complaint in details, and in good language. Consumer Action offers a sample complaint letter and an email complaint template. You can cut and paste these documents below. To submit your Consumer Complaint Form, you can fax it to 517-241-3771 or mail it to the Consumer Protection Division at P.O. Box 30213, Lansing, MI 48909-7713. SAMPLE COMPLAINT LETTER I am writing about . . . (describe the product, including serial and model number, services, issue, law, or event).