Upgrade on cell phone contract

It is with sadness that I have to report that I have been treated unfairly by this cell c. I received a call from from them advising me that I am due for an upgrade in my phone. But the information provide to me referring the upgrade did not match up to what they did to my line. After a few minutes with the agent my line was migrated to a topup from a straight up line. When I called to ask Y I was advised they will have to listen to the call recordings, of which was done and they realised they were at fault. When I asked them to reverse the migration I was told it was not possible. I was however advised I will be reimbursed due to the error and I will not insure any costs. To my surprise I have been debited almost double the amount I have been paying monthly. Basically I am paying for 2 phones because they upgraded my line before it's due date. That IS A RIPOF<br> Now all I do is call them every 2nd or 3rd day of every week to get the issue resolved. <br> <br> <br>