Did you file the returns with TurboTax Online or with the CD/Download TurboTax software? How exactly did you delete them?
It's not that easy to delete a tax return in TurboTax Online. It's unlikely that you deleted three returns accidentally. If you filed three returns in TurboTax Online, each one should have been in a separate account.
If you used the CD/Download software and deleted the returns from your computer, see if the deleted files are in the Recycle Bin (in Windows) or in the Trash or Bin (on a Mac).
