Incorrect activation date and now I am not getting any Assistance

The is never peace when you do an upgrade with MTN I remember three years ago I had problems now today I have a problem again. I spoke to one of the consultants which I have her name however due to the POPI act I cannot mention. I specifically told her to activate the upgrade effective from next month as I do not want to forfeit my current contract benefits as they were better than what I was getting this time she went and activated the contract with immediate effect now MTN just want to swipe her actions under the carpet, sorry not this time around I will go to the Ombudsman if I have to, to get what is due to me