CRA reassesed me for 2021,22,23 because TurboTax submitted the ON CARE credit - how do I file a claim against TurboTax

CRA reassesed me for 2021,22,23 because TurboTax submitted the ON CARE credit. This seems to be a common problem. How do I file a claim against TurboTax - all the links explaining how to file a "100% Accurate Calculations Guarantee" claim seem old or broken.

 

Tried calling support, but the wait is hours long - can a support person arrange to call or email me the information?