Hello Lisa,
Thank you for posting question on Microsoft Windows Forum!
Based on your query of canceling azure subscription for the account no longer being accessed. Well! Since you no longer have access to the account due to your company email being deleted, the suggested path forward is to work directly with Microsoft Azure Billing Support. They can help verify ownership and assist with canceling or closing the subscription.
You can go to the official [Azure Support Options page] https://azure.microsoft.com/en-us/support/ .Select “Create a support request”. Choose Billing & Subscription Management as the issue type. Fill in the details (subscription ID, billing problem, etc.).
Otherwise, you can call the Microsoft Global Customer Service line by visiting this link https://support.microsoft.com/en-us/topic/customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2. Choose your region and corresponding support phone number.
The following articles are for further reference regarding your query.
- https://learn.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request
- https://learn.microsoft.com/en-us/azure/cost-management-billing/manage/cancel-azure-subscription
Hope the above information is helpful! If it is. Free feel to hit "Accepted" for benefitting others in community having the same query too.