How do i contact palmetto gba? Register to receive emails from Palmetto GBA about the latest Medicare news, products and services, special events and more. Palmetto GBA welcomes your comments and questions. You can get in touch with us in writing, by telephone or via email. Palmetto GBA is the Part A/B Medicare Administrative Contractor.How do i contact the gba? If you wish to contact the GBA please use the 'contact us' button. If you wish to make a complaint about the GBA, please download the GBA Complaints form from the downloads section for more information about how to do this.How do i contact gbc support? For GBC Service & Support, please contact us at: 888-449-5927 M-F 8AM - 5PM CST Email Service & SupportWhat is the gba data protection policy? GBA Services Ltd (GBA) is committed to ensuring that all data including personal data of Employees, clients and suppliers is held securely. Data will not be processed/used for any other purpose other than for GBA to provide logistics solutions or for your company to provide services to GBA.