Hi STUDENT360_HELP,
Thank you for reaching Microsoft Community.
I understand that a $100 means a lot already especially when you are a student. However, as much as we would love to assist you on this, any purchase or refund concerns are already outside of our support boundaries here in the Community. This concern should be handled by our Microsoft Store live support. You may reach to them through the numbers listed here: Contact Microsoft Store Support - Microsoft Support
Kind regards,
Marrion