So did I!! 9:48 called once I was sleeping. Called again and I missed it. I can't call it back because it says unknown. Should I block this number?

This # called my Telus cell about 10mins ago (Sunday, Dec 29).  Strange area code/combination, and I didn't answer.  

Just got this call, did not answer.  1:30 on Sunday December 29/13

who is callling me

Just had a call from them as well, didn't answer, didn't leave a message.Called the number back and had an automated attendant say I was called about a survey and to press 9 to be removed. Easily enough.

Just got a got from 1-(438) 800-0458 to my unlisted c-phone. Telemarketers have been calling me days & nights. I don't answer unfamiliar calls any more.It goes directly to my blocking list.