call the number on the notice to explain. Someone may have applied for insurance using an incorrect SSN that happened to match yours. If your return was rejected and you did not get a notice heres what the iRS says
If you think you are not required to complete Form 8962 and include it with your return, you should contact (by phone if no account) your Marketplace to confirm that APTC was not paid to your health insurance company for you or any member of your family. After confirming that APTC was not paid for you or any member of your family, you should include with your return a PDF attachment titled "ACA Explanation" with a written explanation of the reason why you believe Form 8962 should not be required. You may also upload any copies of a corrected or voided Form 1095-A from the Marketplace or any notice issued by the Marketplace indicating proof of no enrollment. You should follow the instructions provided by your software company on how to include a PDF attachment with your return.
TurboTxa does not provide fr attachment of an external document. it will have to be mailed. Follow TurboTax's instructions and use a tracking service when mailed. You may also want to apply for an IP PIN.
