Hi Izumi Sucrose,
Welcome to Microsoft QnA!.
Depending on the resources you deployed, $100 can go quickly. It's best to leverage the free offerings. If you need further assistance, please consider creating an Azure Billing support request by following these steps: ...
- Sign into the Azure portal.
- Search for "Help + support" in the search bar.
- Select "Help + support" from the search results.
- Select "New support request".
- Select "Billing" as the issue type.
- Fill out the required information and submit the request.
Best regards,
Chakravarthi Rangarajan Bhargavi
-Please kindly accept the answer and vote 'Yes' if you feel helpful to support the community, thanks a lot.