Hello @somnath kumar Thank you for contacting us on Microsoft Q&A platform. Happy to help!
Based on the information shared, I understand that you want to delete your default payment method. In order to delete the payment method, you need to be an Account Administrator or have appropriate permissions depending on the type of subscription.
Also, you must cancel your Azure subscription so that you can delete its associated payment method.
For more details, you may refer to this guide - https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/change-credit-card#delete-an-azure-billing-payment-method
Hope this helps. Please write back to us if you have any questions!
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