I am writing to request a billing adjustment.
I was previously on a Dev Mode seat ($15/mo). After using a few dozen AI credits, I realized the 500-credit limit was insufficient for my needs, so I decided to upgrade to a Full seat.
However, after clicking the upgrade, my next invoice shows a total of $40. I expected to pay only the prorated difference to upgrade my existing seat to Full (which should be around $20/mo in total for a monthly plan), but it seems the system has charged me for both seats separately.
I would like to:
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Cancel the redundant Dev seat and keep only one Full seat.
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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.