TurboTax does not process your return for a refund. Once your return has been accepted by the IRS, TurboTax is no longer involved in the process. TurboTax is not advised of the status of your return at all. Privacy Laws prohibit sharing client information between TurboTax and the IRS. Once TurboTax submits to IRS and the IRS accepts the return then TurboTax is no longer involved.
All inquiries, in this case, should be made to the IRS.
On another note, each return is processed based on the information on the return. Your return may have issues on them that are not present on anyone else return.