I just switched to a plan with Unlimited Canada wide minutes, but I just saw Usage page, and there are charges for calls. Why do I get charged?

It is likely a glitch that occurred when you switched your plan. I have flagged a Koodo rep to help you out.

Hi there @r3356 

We have looked into your account, and the charges are normal as you have used up all your minutes before the rate plan change.. You had a 300-Min plan. You also have other charges before that day if you check.. The good news is that you won’t see any of these charges again, since you now have a Canada-wide unlimited plan. 

Hope this helps. :)