This sample letter has choices to help you build your letter. When you write, pick the words that describe your situation.In this post, we discuss the ERISA claim process, appealing your ERISA claim, filing an ERISA complaint, when to hire an attorney, and more. Consumer Action offers a sample complaint letter and an email complaint template. You can cut and paste these documents below. Instead, she argues that the allegations in her Complaint are sufficient to maintain a claim under Section 510 of ERISA. Tips for Filling a Complaint Form. Make a separate list of the things you want to say and separate your feelings from the facts. File a Consumer Complaint with us. After you complete the online Consumer Complaint form, the system will allow you one opportunity to attach the documents.