Hey As his, good news! I see in the backend that the support team was able to solve the issue by adjusting your charge. Please check your inbox when you have a moment and feel free to reply to the case directly if you have any further questions.
For others who encounter similar issue, to prevent additional charges in the future, we recommend using seat approval settings to automatically manage new seat requests. This setting will require Admin approval for a user to be upgraded to a paid seat. Our Help Center article provides step-by-step instructions on how to change the setting.
I’ve gone ahead and close the topic here, thank you!