For those who are frustrated by Telemarketers who called, SMSed on your mobile phone, come 2nd December, you will be able to register your phone number to prevent them from calling you.
Here is the link. At this moment, it is undergoing Trial Registration. I did not actually try it. Will wait until 2nd December to register. BTW, if you are an organisation, you can check out the other option.
And here is the print screen of registration. Not so difficult.