That is not a tax question but a legal question. We cannot comment on legal questions.
If you are not a dependent then you can file your own tax return Not indicating you are a dependent.
If another tax return has been filed claiming you as a dependent then you cannot e-file your tax return. You will have to print and mail your tax return.
Within a year the IRS will investigate and the loser of the investigation must pay back any tax refund and pay penalties and interest.
