How can I talk to a TurboTax person about my return? I already own TurboTax and it's not calculating home sale capital gains correctly (it appears to me).

You can speak to a person, you just have to go through the procedure to do that. You can get TurboTax support contact information, including phone numbers, at this link: https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number/L0Od33nMQ_US_en_US?uid=lgu63kikh