Here's a sample to help you write a complaint letter about a product or service. Be clear and concise.Describe the item or service you bought and the problem. Consumer Action offers a sample complaint letter and an email complaint template. You can cut and paste these documents below. The best way is to write a full report - as much as you like, all details, all your feelings, rants, complaints, personal criticisms of the service-people. To submit a complaint to the HHS Ombudsman, you can: Fill out this online form. Call 866-566-8989 8 a.m. Contact the Internal Affairs Unit with complaints and compliments. We review all feedback and use it to better serve you.