On each occasion that a retail bank licensee becomes aware of a dishonoured cheque of one of its customers, that bank will send a written warning to the relevant customer informing him/her of the existence of the dishonoured cheque, requesting him/her to immediately make good the insufficiency in his current account in order to clear the cheque. This written warning will also inform the customer of the provisions of this system with regard to dishonoured cheques and abusers of cheques.