Sorry for the inconvenience. Not sure what you meant by "premium amount". From the details provided, what I understand is, you are being charged/billed for an unused service or an inactive subscription. If so, please reach out Azure billing team by creating a support ticket using this link- https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request. The ticket enables you to work closely with the support engineers and get a quick resolution to your issue.