Hello muhammad haroon,
Thank you for posting your query in the Microsoft Q&A Community.
To resolve this issue, double-check whether the following items are true:
- The information that you provided for your Azure account profile (including contact email address, street address, and telephone number) is correct.
- The credit card information is correct.
- You don't already have a Microsoft account that uses the same information.
- If you have linked the card to a different Azure account
Follow this link https://learn.microsoft.com/en-us/azure/cost-management-billing/troubleshoot-subscription/troubleshoot-azure-sign-up to get more information on how to troubleshoot this.
Let me know if further assistance is needed.
Babafemi