Call Telus and ask for Loyalty&Retentions and see what deal they can give you (regular customer service group won't be able to give you great deals, unless you threaten to cancel, in which case they transfer you to Loyalty&Retention)...
There is a few retention threads on howardforums you might want to check out...
Thread on Retention&Plan Advice:
http://www.howardforums.com/showthread.php?t=1417869
Thread on Loyalty&Retention "deals":
http://www.howardforums.com/showthread.php?t=1417867
Hope that helps...