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If you see the transactions in the previous step but not when selecting them, it could be a temporary issue. Try refreshing the page or logging out and back into your Azure account.
Since billing support tickets are free, you should submit a support request for billing issues. To do this, go to the Azure portal and select "Help + Support" to create a new request. Be sure to choose "Billing" as the issue type.
https://azure.microsoft.com/en-us/support/create-ticket
https://zcusa.951200.xyz/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request
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