Hello nottoohappy,
So sorry to hear about your issue. While I don't have an explanation as to what or why it happened, you do have the TurboTax Accuracy Guarantee where we want to make right any errors that may have been caused by the software or an expert. Here is the form to fill out: Accuracy Guarantee Claim
If, after review, the accuracy guarantee team determines we were at fault, TurboTax will reimburse you for any penalties or fees. As you alluded to, any taxes owed will still be your responsibility.
I hope that helps and good luck.
