Good morning, mickiwhelan.
I'd be glad to lend a hand so you're able to remove the company you no longer need in QuickBooks Online.
Here's how:
1. Upon logging in, select the company you'd like to remove from the list.
2. Choose the Gear icon in the top right corner.
3. Click Account and Settings.
4. Select the Billing & Subscription tab on the left.
5. Click the option to cancel in the tile containing the subscription details.
6. Complete the following prompts to finish canceling.
I recommend checking out the following linked article for more info on what happens to a company account after you cancel.
I'm just a comment or post away if you have any other questions. Take care!
