Billing Problem?

My promotional period is still on but the bill for the second month is too high???
I have made some changes as to add some international coverage and the expected bill amount was 11 CAD but the debited bill amount is 39 CAD which is too high.
I did the changes before the alert not to change the plan else would be charged more.
Moreover my plan remained the same though the charges are increased.
Please help!!!

Answers

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