Answered question
hi i changed my coverage plan from quebec to canada and usa and on the next billing cycle they charged for the new one but i am not able to make calls to the us
In your Fizz account go to My Plan -> Manage -> Advanced Parameters than toggle off No international calls.
Other answers
You need to contact Fizz.
If it's not working in next billing cycle, please visit https://fizz.ca/en/faq/resolving-issues, wait a few seconds until you see the green bubble on bottom right, click it and start chat