Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I’m sorry this happened, especially when you are relying on the money as a full-time student.
Since you have already cancelled and the charge was made only a few days ago, you may be eligible for a refund. For UK subscriptions, the most recent recurring charge may be refundable if the subscription is cancelled within 30 days of payment, although eligibility is determined through the cancellation process.
Please sign in with the account used to purchase the subscription and check Services & subscriptions. If no refund option appeared when you cancelled, contact Billing Support and explain that the trial renewed unintentionally:
As this is a public community forum, moderators cannot access your account or issue the refund ourselves, but Billing Support can review the charge.
Thank you for your understanding