No, I can't see your tax return, so I have no idea how the calculation was done.
It sounds like your state recalculated your tax return and sent you a letter. If that the case, you can have TurboTax look into this for you.
If you purchased Audit Defense for the return, follow this link to get help with that.
If you didn't purchase Audit Defense, but you get a letter from your state and you need help with it, you can contact the Audit Support Center for help with that. Follow this link for more.