If you've contacted the CRA and they are saying that they haven't received your tax return, then you probably haven't filed it.
Check TurboTax account you've used to do your tax return - your tax return should either be under "Access your filed tax returns" (if it was filed) or it may still be in progress (then you need to file it).
If you cannot find it and it wasn't filed, then you'll have to start a new tax return.
Thank you for choosing TurboTax.
