If you're referring to your bill transactions, then you can check the Audit Log report to review any added transactions on your company file. If there are bills that should be recorded, you can delete them.
Use the fields on the Filter panel to choose the appropriate User, Date, or Events filter to narrow the results.
Select Apply.
On the other hand, if you're referring to your QuickBooks Online subscription that goes up to £18 PCM, I suggest reaching out to our QuickBooks Online Support Team to check and review the amounts further.