There is nothing Turbotax customer service can do. You have to :
Unlink your account via Credit Karma, follow these steps from the article and if you can not pull it up just search up how to unlink turbotax from my credit karma account:
https://support.creditkarma.com/s/article/Linking-your-TurboTax-account-to-Credit-Karma#:~:text=How%....
If that does not work, which I should not see why, then you gotta file with a different account not linked to Credit Karma. Or try clear and start over on Turbotax, under tools and select tax tools
If you already filed you can request a refund with this link:
https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-refunds/request-refund-turbotax-p...
just click other and explain what occurred. It however is just a request not a guarantee
