Hello Pawan Bansal,
Thank you for posting your query in the Microsoft Q&A Community.
Please note that the Azure free account is available to all new Azure customers who haven't previously had an Azure free account and received a USD200 credit.
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.
Follow this link to get more information.
Let me know if further assistance is needed.
Babafemi