@prasantc You can upgrade to a pay-as-you-go account. This automatically removes the spending limit so you can continue to get access to all the free products included in the free account. With the spending limit removed, you pay for what you use beyond the free amounts and this is charged to the card you provided.
For more information, refer to FAQ: https://azure.microsoft.com/en-in/free/free-account-faq/
If you still find any difficulties, please contact billing and subscription management support team, The billing and subscription team would provide best guidance on this query and it’s free support.
Hope this helps!
Kindly let us know if the above helps or you need further assistance on this issue.
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