Thrown from pillar to post

Once again I am thrown from pillar to post with you guys. At the end of Feb I downgraded my contract to ensure it fits within my R199 budget. The agent confirmed I would not be paying more than this, even discounting my CLI. Now I look at my invoice and my subscription is R265 because it include 100 minutes, which I did not want included, all I agreed to was the R199 for R320 airtime on TopUp. I call the upgrades department, who transfer me to another department who also cannot help. I am now expected to call them back to give them the dealer ID BYTSV for them to direct me accordingly. I refuse to go through this back and forth. Vodacom, please come to the party and up your service game!