False marketing

In January I wanted to cancel my telkom contract as it was coming to an end. I was called by one of their agents asking me if I wanted to upgrade my contract,I would now be paying R100 for the same benefits because I am no longer paying for my device.Jan-Feb all was well,in March I did not receive my all net minutes,when I contacted the call centre I am told they are not part of my contract,which is not what the consultant upgrading my contract told me.If so why did I receive all net minutes for the past two months? I agreed to the upgrade ONLY because I would be receiving the same benefits. This is an underhanded and false marketing strategy from telkom.I wont even consider getting an adsl line from them.