CSL Mobile Limited 香港移動通訊有限公司 39th Floor, PCCW Tower, Taikoo Place, 979 King's Road, Quarry Bay, Hong Kong Tel：(852) 2888 2123 Email: customerservice@hkcsl.com You can choose to stop receiving direct marketing communications from csl at any time, free of charge, by downloading our Direct Marketing Form or picking up a copy from any csl shop and returning it to our Data Privacy Officer at PO Box 9896, GPO Hong Kong or via email to dmprivacy@hkcsl.com Your opt-out request will become effective within 10 working days from the day on which we receive your request.