A recurring charge is a sum of money that is automatically debited from your account at regular intervals. This is standard practice for auto-renewing subscriptions and services. However, if the service is no longer needed or if the amount charged is too high, it may be necessary to reverse the charge. To do this, you must first contact the service provider and ask them to cancel the direct debit. If that doesn't work, you can ask your bank to stop the direct debit. In any case, it is important to regularly monitor your samples to avoid surprises.