IRS calculates we owe money, when Turbo Tax says we have a Federal Refund due. How do I reach Turbo Tax (TY 2021)

We e-filed with Turbo Tax for TY 2021. The calculation showed we were to expect a refund. We e-filed it, and IRS Accepted it, History of our return follows:

Federal Return Received by TurboTax: Saturday, Apr 9, 8:02 PM EDT

Received by IRS: Saturday, Apr 9, 8:04 PM EDT
Filing status changed to: Accepted Saturday, Apr 9, 8:25 PM EDT
 
We never received our Fed Return, (we did receive our State Refund), were informed that due to Covid, could be delayed. Then we forgot about it, until this past September 2023, when we were contacted by IRS Collection Agency (The CBE Group), informing our Tax payment was past due, and accruing interest. We checked our Return on file in Intuit account and downloaded IRS records of our return. IRS transcript does shows we have an amount due, but all the various line items seem to match our TT lines. How do we contact TurboTax, since I am guessing they miss calculated, since the IRS is saying they differ with our TT results.