Since 21 Nov 2016, I have received missed calls from Canada. Since I have no relatives, friends or colleagues in that country, I did not pick up the call.
And the calls were usually Singapore 4-6pm which Canada would be mid night.
This made me even more suspicious about phone scam.
After I blocked the number, another number appear calling me again.
Please take note of below no : +1 647 523 2390, +1 647 523 5497