Here is some information that may help you find
your return if you used TurboTax Online: https://turbotax.community.intuit.ca/replies/2648026
You can make changes after you have filed your tax
return through the CRA or through ReFILE:
https://turbotax.community.intuit.ca/replies/2647992
If you have TurboTax Live Assist & Review, here
is how to talk to a Tax Expert:
https://turbotax.community.intuit.ca/replies/3456106