Hello Youssef Abdelmagead, if you are a Global Administrator in the Microsoft Entra tenant associated with the Azure subscription, you can gain the owner privileges at the subscription level by following the procedure described in the following article - https://learn.microsoft.com/en-us/azure/role-based-access-control/elevate-access-global-admin?tabs=azure-portal. Once this is done, you should likely be able to delete the specific Azure subscription.
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