Most subscriptions here are paid via direct debit, which the app detects and groups under a "fixed expenses and subscriptions" category. If the charge is considered a subscription, they let you fill a generic form with some details about yourself (i.e. Address, Email, Phone, CustomerID ...) to request it be cancelled.
I reckon the bank(s) requires payment providers to handle this as part of the integration for recurrent debit authorizations.
