Request to Change Subscription Plan or Refund

Hello!
I am currently a student using your service. Last week, I accidentally selected the annual subscription instead of the monthly plan I intended. As a result, I was immediately charged $192.
Account Details:

Due to my limited budget as a student, I kindly request your assistance in either changing my subscription to a monthly billing cycle or processing a refund for the annual charge. I truly value your service and would like to continue using it in the future under a more manageable payment plan.
Thank you very much for your understanding and support.

Best regards,
Wuji wang