After you file

Hi today I spoke with the IRS again and they told me that after 12 weeks with no answer and no appears in the system I should consider apply again I told them that my IRS agent sent the application to the address Austin TX [removed] since it is a 1040 NR together with the W7  IRS don’t know if they fowarded to the ITIN  office or not and  I do not appear in the system

What happen if I sent the same documents again with a letter from the agent to the right ITIN OFFICE What happens if there are duplicity ?