3. Can someone else file a grievance on my behalf? Posted on September 11, 2017 at 12:35 pm.Written by advantage_admin Appointment of Representative If a member wishes to appoint a representative to file a grievance, he/she must request a coverage or exception determination or an appeal on his/her behalf. Both the member and the appointee should fill out the corresponding form (or an equivalent written statement) and submit the request. You may call 1-888-620-1919 to file an appeal, Monday thru Sunday, from 8:00 am to 8:00 pm. TTY/TDD users may call 1-866-620-2520. You may also send a letter by mail to: Triple-S Advantage Department of Grievances and Appeals PO Box 11320 San Juan, PR 00922 (Form for Appointment of Representative) 2. What is a grievance? Posted on September 11, 2017 at 12:34 pm.Written by advantage_admin Grievance: A type of complaint you can file regarding us or one of our participating health care providers or pharmacies, including complaints regarding quality of care. Grievances do not include coverage or payment disputes. 1. How do I file a grievance with my Triple-S Advantage plan? Posted on September 11, 2017 at 12:25 pm.Written by advantage_admin You may call 1-888-620-1919 from Monday thru Sunday, 8:00 am to 8:00 pm. TTY/TDD users may call 1-866-620-2520. You may also: send an email to *protected email* send a fax to (787) 993-3261 mail your grievance to: Triple-S Advantage Department of Grievances and Appeals PO Box 11320 San Juan, PR 00922