Refund For TurboTax Filing Fees

I was informed by the IRS that TurboTax is not legally allowed to charged customers fees to file their taxes if your AGI is less than $34,000 (less for some prior years)

Turbo Tax has charged me for the last five years, although my AGI was much less than that threshold. 
Who do I contact at TurboTax to request a refund for these fees that were incorrectly charged to me?