Incorrect Advertising/ Promises made

We are trying in vain to get this issue resolved. My wife got a call from the call centre to do an upgrade. The sales assistant incorrectly quoted her a package and then sent through a wrong contract which we disputed. We logged a complaint which Patrick was trying to resolve. He heard the voice recording of the call and agreed that the sales assistant made a mistake. To make good to the customer, Patrick advised that Cell C will do the upgrade at R229 per month for 25 anytime minutes, 1Gb data and 100 sms plus credit her account with a once off of 1200 minutes that can be used over 24 months. He advised that someone will call her to do the upgrade. We are waiting since 16 August for this to be done. My wife even left messages for Patrick to call her but he has not. He has not even updated the comments against my wife's number for someone else to pick up the query. We need this urgently resolved today!!!!