Hi, thank you for reaching out to the Microsoft Q&A forum. I’m happy to help.
Please note that here in the Microsoft Q&A forum, we are fellow users and do not have account access.
Since it has been 16 days already, I recommend contacting Microsoft Billing Support directly. They have the right tools and resources to check your refund:
Click this link: https://support.microsoft.com/contactus/
Sign in to your Microsoft account.
Select the product you need help with > Click 'Get home support'.
Type "Chat with an agent" from the text field and press Enter.
Click "Contact support" at the bottom.
Follow the prompts to connect with a live agent.
Customer service phone numbers: https://support.microsoft.com/topic/customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
To access the full range of support options, including chat, please contact them during business hours which are Monday to Friday from 9 AM to 5 PM local time.