Thanks for visiting the Intuit Community and bringing this situation to our attention, giff,
I want to make sure that this concern is properly handled.
In your case, since this is a public forum and we don’t have visibility in pulling up an account. I’d recommend contacting our Customer Care support. They have the necessary tools like screen sharing to walk you through and determine what caused the issue of why you can’t delete the Flat Rate Saving.
To contact us, here’s how:
- Click this link https://help.quickbooks.intuit.com/en_GB/contact.
- Choose the QuickBooks Product.
- On the Contact Us page, select a topic.
- Click on Get Phone Number button to see the support number.
If you have any other questions concerning your QuickBooks Online account, please let me know. I'm always here to help.