Home   /   Constituent Services / IRS Problems Who can I talk to about problems like liens, back taxes, penalties, etc.? The Taxpayer Advocate 24-Hour Toll-Free Hotline is: 1-877-777-4778. For more information about the Taxpayer Advocate Service click here Biography | District 8 | News | Constituent Services | FAQ's | Photo Album | Kids Page | Email Updates | Contact 419 Cannon House Office Building | Washington, D.C. 20515 | Phone (202) 225-2176 | Fax (202) 225-0999 605 East Robinson Street | Suite 650 | Orlando, FL 32801 | Phone: (407) 872-1962 | Fax:(407) 872-1944