I am writing to request a billing adjustment.
I had previously paid a Dev Mode seat ($15/mo) just now. But soon I decided to upgrade to a Full seat.

After assigned myself to Full seat, I found myself with a $40 invoice for next month.


I would like to:
-
Cancel the redundant Dev seat and keep only one Full seat.
-
Adjust the invoice so I am only charged the difference for the upgrade.
Please let me know how I should proceed to fix this and modify the charges.
