The IRS and State have contacted me stating that Turbo tax never submitted my 2013 taxes and i need copies of proof. All i have is an email from 2013/14 stating i filed.

The IRS and State have contacted me stating that Turbo tax never submitted my 2013 taxes and i need copies of proof. All i have is an email from 2013/14 stating i filed. How do i get a hold of the forms they are saying turbo tax never submitted?