Hi Daisy
You can add your credit card, debit card, bank account, PayPal account, or mobile phone as a new payment method for your Microsoft account. Add a new bank or credit card to your Microsoft account - Microsoft Support
If you encounter any issues, double-check the billing address and ensure that your card is enabled for international transactions. If problems persist, you may want to contact Microsoft Support for further assistance. Contact Us - Microsoft Support
Your Sincerely
Hahn. W - MSFT | Microsoft Community Support Specialist