@DoninGA is correct, the dependent's debts should not impact the taxpayer's refund. If this person is listed as jointly owning your bank account, however, that may be different.
Only married persons are eligible for protection from the other spouse's debts: What is an innocent spouse and how does it differ from an injured spouse?
You could try getting a Taxpayer Advocate. Click the link for help getting a local taxpayer advocate. Contact the Taxpayer Advocate Service Online at: Taxpayer Advocate Service Contact Us.
For more ways to contact the IRS, see: IRS Let Us Help You.
For all related taxpayer advocate information, see: Topic No. 104 Taxpayer Advocate Service – Your Voice at the IRS.
For more information, see: Who Can Garnish an Income Tax Refund? - TurboTax Tax Tips & Videos
