Can not remove seats

My organization pays for 16 seats, and is currently using 6. This is indicated when I remove seats from our organization. I remove seats from 16 to 6(or any other numbers). The GitHub also says that “You have successfully downgraded to 16 seats.”. And I still have to pay for 16 seats. Where do I go, or what do I do to resolve the problem on the organization account?

@siqilu, your question is best answered privately.
I am going to create ticket on your behalf and lock this thread.
We will follow up with you in the ticket.
Thanks!