Accidental Editor Assignment – One-Time Charge Refund Request

Hello Figma Support Team,

I recently noticed an additional charge on my invoice under "One-time charges and credits." 
It appears that this was caused when I mistakenly assigned a team member as an Editor, which automatically added a paid seat. 
As soon as I realized this mistake, I quickly reverted the member back to View-only mode. 

Since this was an unintentional action and the additional seat was never actually used, I kindly request if the related charge can be canceled or refunded. 
I understand that Figma charges automatically when a seat is upgraded, but I would greatly appreciate your understanding in this case, as the change was accidental and corrected immediately. 

Thank you very much for your assistance.  
Best regards,