Call Control is a free optional home Telus feature that automatically screens robo-callers and prevents them from bothering you.
HOW CALL CONTROL WORKS
With Call Control on, when a caller phones you for the first time, they’ll be prompted to enter a number on their keypad. If they enter it successfully, the call will go through to you, and they won’t be prompted again (as long as they’re one of your 25 most recent callers). More information and instructions HERE. There is also a mobile solution; however, we recommended (and still do) to use the free software YouMail for more control of your mobile calls and spam.