Hello Alex P,
Welcome to Microsoft Community.
I am a Microsoft user just like you, I hope you are doing well?
You will need to cancel the subscription on your corporate email and purchase using your personal email.
Your subscription is eligible for refund if you bought an annual subscription within the last 30 days or you bought a monthly subscription and you're cancelling within 30 days of your last renewal date.
Please understand that to get a refund, you will need to cancel the subscription, also note that refunds are automatically processed and you should receive it within 3 - 5 days business days.
To cancel Microsoft subscriptions
1. Go to the Manage subscription page (https://account.microsoft.com/services) and if prompted, be sure to sign in with the same Microsoft account you used to purchase your Microsoft 365 subscription.
2. Note: If you see a link that says Turn on recurring billing, this means your subscription is already set to expire on the date shown and you won't be automatically charged after this date. There's nothing further to do at this time and you can continue to use the product until your Microsoft 365 subscription expires.
3. Select Cancel subscription (or it might say, Upgrade or cancel).
4. Follow the instructions on the page to proceed with cancellation by turning off recurring billing. To review our complete cancellation policy, see https://go.microsoft.com/fwlink/p/?linkid=839716.
Source: https://support.microsoft.com/help/46e2634c-c64b-4c65-94b9-2cc9c960e91b
Please let me know if you need more assistance.
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Warm Regards
