If you need to ask for a deferment, you should call them as soon as possible. Once they actually start the debit process, they say they can't stop it.
FAQ: Why was my bank account auto-debited for the TurboTax fees?
https://ttlc.intuit.com/community/charges-and-fees/help/why-was-my-bank-account-auto-debited-for-tur...
The first paragraph there says:
If you’re in need of assistance, call us by the Tuesday prior to your debit date at 1-888-808-1723 to speak with a trained specialist and mention “auto-debit”, or visit TurboTax Support.
If for some reason you can't reach Support with that phone number in the FAQ, there may be one in your emailed bill. Otherwise, here's an alternate way to reach them, but try the one mentioned above first.
FAQ: What is the TurboTax phone number?
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
