How do I opt out of Audit Defense?

I can't figure out how to opt out of Audit Defense.  I even select to get it and then have it removed, but the only option I can see is to pay for it with my refund or by credit card.  I don't want to do either.  Please help.  This has been very frustrating, and Turbo Tax does not have a good help desk system - no way to speak to someone.