I had put in for the refund once, and was told it wsa past the 60 day satisfaction window. TurboTax admitted their error well after the 60 days had passed. I had followed the link given to me by the TurboTax rep I had spoken with.
You will have to contact TurboTax support for assistance with this problem. Use the key words Billing Issue
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number/L0Od33nMQ_US_en_US?uid=lfgviwbm
Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax
No one in the user forum can resolve a billing issue. If you have a question about your TurboTax fees or billing, make sure you use the word “billing” in your request for help. Do not use the word “refund.”
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number