I'll point you in the right direction for support with your billing concern.
To resolve this requires an exchange of sensitive information. Since the Community is an open forum, I suggest you contact our Technical Support team instead. They can pull up your account within a secure environment and investigate your billing concern.
Refer to this article for the steps: QuickBooks Online Support. It includes the steps you need to take to contact our Technical Support team, along with their operating hours.
Post a comment below if you have additional questions about your QBO company. I'll get back to you as soon as I can.