Is there a chat for identity fraud? Or only the number?

If you are rejected because your SS#  has already been thru the IRS system this year  AND  are positive that you didn't already e-file your return on an earlier date   AND  you are sure that you are not eligible to be claimed as a dependent by someone else, you MAY be a victim of identity theft. You will have to file a paper return instead of e-filing. When you print your return for paper filing, also complete IRS Form 14039, Identity Theft Affidavit (PDF).  Use a fillable form at IRS.gov, print it, then attach the form to your return and mail your return according to instructions.

You can access IRS resources on identity theft here.

TurboTax also has resources on identity theft here.