Hey there @josephine1
Welcome to the community 
Did you complete the plan change online on Fido.ca? If so, it should take effect immediately. You can simply log on to Fido.ca to confirm your new plan details. An email confirmation would have been sent in regard to the recent changes made.
You can always contact us at these channels if you'd like us to look into it. Alternatively, we can also sent you a PM here. Let us know!
