Based on this old thread, try to open a support case with Microsoft Azure support for clarification.
Azure Billing and Subscription support is offered by Microsoft by no cost and it's for free.
Source: Azure Support plans
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This is the error message i get each time i tried using any debit card for pay-as-you-go subscription on Microsoft Azure 'Check that the details in all fields are correct or try a different card'. All details matches with my profile. It's very frustrating. Is there any other way to subscribe. Please address this as soon as you can.
Regards
Based on this old thread, try to open a support case with Microsoft Azure support for clarification.
Azure Billing and Subscription support is offered by Microsoft by no cost and it's for free.
Source: Azure Support plans