Are you in California? If you choose to have the Turbo Tax fees deducted from your refund there is an EXTRA 39.99 service charge for California and that include Audit Defense. The only way to get rid of it would be to pay the fees up front with a credit card.
Turbo Tax Premium FAQ
https://ttlc.intuit.com/community/choosing-a-product/help/what-is-the-premium-services-bundle/00/255...
How to remove Turbo Tax Premium
https://ttlc.intuit.com/community/downgrading/help/how-do-i-remove-premium-services/00/26266
