Unable to upgrade from a free user to a paid user, the credit card was debited

Summary:

Hello, the upgrade from a free user to a paid user was unsuccessful, and the credit card was charged. I failed when I upgraded to a paid user. At 9:02 pm Beijing time, a sum of US$104.56 (SGD 138.19) was deducted. I don’t know what The reason is that the fee has not been refunded to my credit card, please help me to refund the fee after verification

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