2 Zoom Pro Annual Subscriptions Double Payment

I purchased an annual Zoom Pro subscription last December 19, 2024 and last April 15, 2025 I tried to update my plan to add 2 users and transfer license. I received a a credit balance adjustment invoice which I think was because they cancelled my initial subscription so I purchased another annual subscription on April 19, 2025. When I was purchasing, it shows $0 to pay so I believed that the credit balance will be deducted in the next subscription to purchase. But today, April 22, 2025, I was deducted the full amount of $267.36 for the Zoom Pro annual subscription again. I would just like to ask what happened to the credit balance adjustment invoice that I received? I was told by the chatbot that I cannot actually received a refund if the subscription was cancelled and that the initial subscription is still ongoing. I did not even cancel my initial subscription but then I received the credit adjustment. And now, it looks like I have 2 Zoom Pro subscriptions.