Hi there, Jon.
We can wipe out your data if your account is still under the 90-day subscription. Please see this article for the steps: Delete your data and start over in QuickBooks Online
If it's not, you can sign up for a new account. Then, export and import your lists (chart of accounts, customers/vendors and product and services).
Let's export the lists from the old account:
To sign up for a new account:
Then, let's import the lists:
I've got an article with more steps for you to follow: Move your lists to QuickBooks Online
You can also check out this link for more topics on how to set up your new account. We are here to help if you have other questions.