I suggest you check the Azure Billing section to understand the cost added for the resources in use. In Azure portal visit 'Cost Management + Billing' and select the subscription as marked below:
When you select the subscription, the costs associated with each resources in the subscription can be reviewed as below:
You can further drill down to the resource which has configured wrongly as indicated and check the cost accumulated. With this, you can think of deleting or re-sizing the resource to avoid any cost considered with the resource
Hope this helps.
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