I previously subscribed to a trial plan for $3 on Academia.edu. Initially, I found the website's resources outdated and did not use the service afterward. Later, I noticed multiple notifications about failed attempts to charge $99 to my account (likely because there weren’t sufficient funds at the time). Realizing that the website was attempting unauthorized charges, I proactively canceled the auto-renewal subscription.However, on January 26th at 9:55 PM (Vietnam Time), my account was charged $99 without any clear reason. Upon checking, I found that Academia.edu had withdrawn $99 for a service I did not use. I had previously canceled the auto-renewal subscription, yet Academia.edu reactivated my subscription and processed the payment, seemingly to create a valid receipt.Frankly speaking, this is blatant fraudulent behavior involving unauthorized access to my card to charge payments. This action is illegal, and I demand an immediate explanation and resolution.I request a full refund of the $99 charged to my account and confirmation that my subscription has been permanently canceled. If I do not receive a satisfactory response, I will be forced to escalate this matter to my bank and consumer protection authorities.I look forward to your prompt response.