Hello Prawit,
Thanks for reaching out to the Microsoft Q&A forum Support.
If I get you correctly you want to change your subscription from Microsoft Basic to Personal plan.
To do this, you’ll first need to cancel your current subscription and request a refund. Once that is done, you can purchase the Personal subscription of your choice.
Please note that we are unable to process cancellation and refunds directly through this channel.
Refunds are handled by the Accounts & Billing team, who may need to ask specific questions related to your account and payment history before they can assist further.
For the most accurate support, please use the link below to contact Microsoft Live Chat Support. A representative will assist you and, if necessary, connect you with the billing team: Contact - Microsoft Support
Best wishes,
Maryam | Microsoft Q&A Support Moderator