@Arindom Sil Thank you for reaching out!
In the description you have mentioned that you deleted your free trial account accidentally.
Did you try re-activating the subscription?
Please follow the instructions from this guide - https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/subscription-disabled
If you are unable to re-activate the subscription, you can contact Azure subscription management team for further assistance. Here is the link - https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request to create support case.
FYI: Azure Billing and Subscription Management support is included in the Basic Support Plan without any charge.
https://azure.microsoft.com/en-us/support/plans/
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