(28)In order to enhance the effectiveness of Directive (EU) 2015/2302, organisers should be required to comply with certain standards when handling complaints, including an obligation to acknowledge receipt within a period of seven days and to provide a reasoned reply within a period of 60 days. In cases where communication is made by post, the organiser should be considered to have complied with those obligations if the date of the postmark falls within those respective periods.