I'm sorry you are having issues with your credit card processing.
It may be browser-related. If you have a second browser, you could try that, and that solves it for some people. But the safest thing to do would be to just phone Support for troubleshooting first.
You may also want to keep an eye on your credit card and bank account to be sure those multiple attempts don't actually end up posting.
Otherwise you can phone TurboTax Support (they are open this evening) for troubleshooting.
To get a phone number for TurboTax Customer Support, fill out the small form at the link below. Enter a short question or a few keywords. You will be assigned a phone number based on your issue.
The phone number will not display when they are closed.
Support hours 5AM-9PM Pacific (8AM-midnight Eastern), 7 days/week.