@Iloilo Lubricants Sales Center Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
You may experience an issue or error in which a card is declined at Azure sign-up or after you've started using your Azure subscription.
To resolve your issue, please refer to suggestion mentioned in this article. Troubleshoot a declined card
If the issue is still not rectified, I would recommend to please contact, Billing and Subscription team would be the best to provide more insight and guidance on this scenario based on your region and requirement. https://azure.microsoft.com/en-us/support/options/ it's free, and it's the best choice for you.
Please let us know if you have any further queries. I’m happy to assist you further.
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