Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hii,
You can see the question of how to cancel and request verification of refund eligibility at the link below:
Or
View with Microsoft Agent
The best way to contact Microsoft is using the Home chat. Access the link below and type "Office." Below, there will be a Contact Support option.
Enter your details to open the chat, and a Microsoft agent will come to assist you.
https://support.microsoft.com/home/contact
Please consider rating the question (accept the answer or not), and access the community at Microsoft Q&A if you have further questions.
Thanks