I can help you in managing your subscription, @Espe207.

You'll have to cancel your account to avoid further charges and then contact our Customer Support to request a refund.

To cancel the account, you can follow the steps provided by KlentB above. You can do it from the Gear icon and then go to the Billing & Subscription tab. You can read this article for more information: Cancel your QuickBooks Online subscription.

Once done, you can now reach our Customer Support. They have the tools to get into your account in a secure environment and process this refund request. 

You can also follow the steps provided by my colleague above on how to contact the QuickBooks Online Customer Support team.

Let me know if there's anything that you need. I'm always here to assist. Have a wonderful day!