Bad service from vodacom cancelation and upgrade

What a bad service I've received from vodacom upgrade and cancelation department. 2 weeks back I called vodacom to cancel my contract. Upon that, Daniel Pillay , vodacom consultant asked me why I wanted to cancel and I told him I want to buy a new phone from Mtn which was less than what vodacom was charging for the same deal. He then told me that he will do a deal match for me of which I didn't have a problem with. Till today nothing has been done, I've been calling vodacom over and over again and they keep say that Daniel Pillay will call me back since he is the one who has a deal match pin. I don't know why vodacom is treating their loyal clients like this. On top of that they made me take a contract of minutes.

I hope someone will assist *** ***