If you were charged again for the QuickBooks Self Employed app, you will need to reach out to QuickBooks Self Employed from the in product chat or email option. They can support you on billing inquirers related to QuickBooks Self Employed.
If you were expecting to receive a free TurboTax with your QuickBooks Self Employed app and you were charged for TurboTax, you can reach out to either TurboTax Support or QuickBooks Self Employed support.
TurboTax Support can be found using the article below.
https://ttlc.intuit.com/replies/3300041