What PayGo plan do you have? I buy the $100 plan for a year and don't ever use it up in a year, so whenever I have over $100 in my balance, I ask to get it applied towards another year. You have to call to do that because Rogers stores no longer will do PayGo renewals.
Recently the cost per minute for calls went up to 50 cents, which is almost criminal. 7-11 Speakout is still just 25 cents per minute and all their plans, from $25 to $100 are good for a whole year. I'm thinking about switching when my current minutes run out.