It is not uncommon in Hong Kong to receive several junk/marketing calls per week, or even per day. Following the tips below will reduce them to zero.
Gov’t Registry: Add your number to the government ‘Do Not Call’ registry by calling 1835000 from the number you wish to register. It is an automated process and will prevent pre-recorded ‘robocalls’ only. It is also meant to block junk faxes. Check the status of your number on their website.