SmartInternet5GB - Downgrade instead of upgrade

recently requested an upgrade from SmartInternet2.5gb to SmartInternet5gb..only to find out that the night surfer benefit has been removed..now i'm paying double the price for less bandwidth (downgraded). When querying this with sales agent 2 days later on the 1 Oct when I noticed the error, I was confronted with a bad attitude. defensiveness and reluctance to help or correct... only response I can get is that they can't fix or revert me back to my previous package or give me the 15gb benefit which I expected. i.ve feel cheated and conned... I don't understand why agent didn't inform me that package benefit has changed the catalog I have clearly states the 15 gb night surfer benefit. they logged a call on the 1 Oct after much discussion....up to date I have received no feedback from Telkom. was initially told that they will respond within 72 hours that never happened. spoke to many agents and managers only to be sent from pillar to post....no one will take ownership.also not seeing anyone assisting and correcting the problem to something that I don't believe was my fault...Surely Telkom should look at the way they treat there customers!!!