Did you already receive an IRS letter? For help with an IRS letter, TurboTax has a free Audit Support Center that you can phone, if desired, and they may be able to further advise you. The special phone number is low down in the table shown in the FAQ below:
FAQ: TurboTax Audit Support Center
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-audit/turbotax-audit-support/L6AcMoN...
If you purchased the optional Audit Defense add-on, the FAQ also tells how to contact the company that provides it. You can also phone the IRS If you need additional info that is not provided in the letter.
