I understand how you need to cancel your account, and I'm here to guide you, @tom279-comcast-n.
Make sure that you're currently using a browser to cancel your QuickBooks account successfully. You can deactivate it by going to the Billing and Subscription settings found in Account and Settings when you click the Gear icon.
Here's how:
If you're purchasing QuickBooks Online from a mobile app store, here's how to cancel your account.
Once canceled, we'll keep your data for up to a year, and here's what will happen to your QuickBooks Online data after you cancel.
On the other hand, if you still need an agent to verify and cancel the account, here's our way to connect with you: QuickBooks Online Support.
I'm looking forward to your business success. Feel free to tag me if you have additional questions about canceling an account. Have a great day, and keep safe!