They will ***** your money from under your noses

I receive a call from a MTN saleperson about an upgrade to an S7 Edge and I say I want a gold one. Then said call centre agent says he would call me back, lo and behold I then receive an sms that I have been upgraded and meanwhile I dont have a phone. I phone to find out who upgraded me and no one at the whole company can answer my question. They ignore calls so that they may be able to withdraw the funds and when you want your funds back it becomes mission impossible. trust me that I will not be renewing my contract with these ****en ******, and should any funds be withdrawn from my account other than the agreed upon amount that has always been deducted, I will be suing the pants off these ******.