What is pay with your refund

Are you sure your federal return has a balance due ?   Or did they show you a summary of the fed refund - the state balance due for an overall balance due ?   If so the state balance due cannot and will not be taken from the federal refund ... in the FILE tab step 2 you will be presented with how you want the fed refund and how you wish to pay the state balance due. 

on the top, it says fed tax due and state tax due.

To contact TurboTax customer service/support use their contact website during business hours. If the problem concerns any type of refund for fees, use the key words billing issues and do Not use the word Refund or you will get a phone number for tax refunds.

Use this website to contact TurboTax support for this situation:

https://support.turbotax.intuit.com/contact/