Dropbox Business subscriptions are non-refundable except where required by law.
What if I paid with a direct debit payment method?
Please contact your bank for a refund of transactions paid with a direct debit payment method. Note: Dropbox doesn't delete any of your files when your subscription is downgraded. If downgrading causes your account to go over quota, then syncing between connected devices stops.
Do I get refunded for licenses?
Full and prorated refunds are not provided for licenses removed during a current Dropbox Business subscription.