Hi @Surendra Rana
1.Double-check that all resource groups and resources have been deleted. If you have deleted everything and are not using any active services, there should be no charges.
2.Log into the Azure portal and check your subscription to ensure there are no alerts, notifications, or warnings related to any active services.
3.Monitor: Even if you are not actively using any services, it's a good idea to periodically check your account to verify no unexpected charges arise. Sometimes, unused services.
Reference:
https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/avoid-charges-free-account#you-used-some-services-that-aren%27t-free
https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/cancel-azure-subscription
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