For some reason the irs could not see all my reported wages

Hello, 

 

Long story short a tax advocate  Told me that One of employer did not report my wages to the irs 

 

i call my employer asked him to send the w2 again to the irs he said that would be a double income for you I cannot send it again. 

how i can solve this can i send the irs my w2 myself ?