JakaPay bank charges always occur because of subscriptions. This means you are subscribed to a service provided by one of JakaPay’s partners (more on this later).
These days subscriptions are so commonplace that it is very likely you forgot you had a JakaPay subscription in the first place.
This being a subscription, it means that the withdrawals will keep happening until you decide to cancel the subscription you have on the JakaPay website.