We don't know what "doing my taxes wrong" means. TurboTax returns are self-prepared, unless you paid extra for live CPA/EA help. But your question is too general, so we can only give you some general info.
The FAQ in the comment above refers to desktop software. The type of guarantee in the link provided above does not apply to Online TurboTax.
https://ttlc.intuit.com/community/charges-and-fees/help/does-your-unconditional-60-day-money-back-gu...
You apparently are using Online TurboTax.
We don't know what type of error you are referring to, so see this FAQ about the Accurate Calculations Guarantee:
FAQ: What is the TurboTax 100% accurate calculations guarantee?
https://ttlc.intuit.com/community/charges-and-fees/help/what-is-the-turbotax-100-accurate-calculatio...
FAQ: How do I submit a claim under the TurboTax 100% accurate calculation guarantee?
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-submit-a-claim-under-the-turbotax-1...
You may wish to speak to TurboTax Support and discuss your issue with them. This is a user community forum and nothing can be done here anyway. I don't know what they will tell you, but it can't hurt to try. If there was some kind of error, they need to know about it.
Support hours are 5AM-9PM Pacific (8AM-12 Midnight Eastern), 7 days/week
FAQ: What is the TurboTax phone number?
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
