After you file

If you had answered No your tax return would have shown the smaller refund.  You can change your answer in the program and see if the new refund matches the IRS.  Sorry that wrong answer can affect many things in your tax return.   

How to contact Turbo Tax
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-contact-turbotax/00/26991