Taxpayer Advocate Services Most problems can be solved with one contact by calling, writing,or visiting an IRS office. But if you have tried unsuccessfully toresolve a problem with the IRS, you should contact the TaxpayerAdvocate Services Program. You will be assigned a personal advocatewho is in the best position to try to resolve your problem. TheTaxpayer Advocate can also offer you special help if you have asignificant hardship as a result of a tax problem. You can contact a Taxpayer Advocate in the United States, PuertoRico, U.S. Virgin Islands, and Guam by calling a new, toll-freeTaxpayer Advocate assistance number, 1-877-777-4778.Persons having access to TTY/TDD equipment can call1-800-829-4059 and ask for the Taxpayer Advocate. Envelope: Mail. Persons living outside the the United States,Puerto Rico, the U.S. Virgin Islands, or Guam may contact the TaxpayerAdvocate at: Office of the Assistant Commissioner (International) 950 L'Enfant Plaza South, SW Washington, DC 20024 You can also contact one of the IRSoffices located abroad, listed earlier. Phone: Phone. In Washington, D.C., call (202)874-1930. InPuerto Rico, call (787)759-4501. Fax: Fax. In Washington, D.C., dial (202)874-1705. InPuerto Rico, dial (787)759-4535. While Taxpayer Advocates cannot change the tax law or make atechnical tax decision, they can clear up problems that resulted fromprevious contacts and ensure that your case is given a complete andimpartial review. Taxpayer Advocates are working to put service first.For more information, get Publication 1546.