disgusting service from Branch and Branch Manager

So I took out a unlimited contract last Monday .The phone was defective so i took it back at 9 am Sunday .No stock .Refused to phone or get a new phone from another branch .Refused to cancel contract except at my cost .Dissapeared into back and ignored me while I sat there from 9 to 12 ..Could not supply me a legal copy of contract said application was the contract .Breached the Consumer protection Act and the return within 7 day policy .Never apologised once .Left the phone there without any idea what the next steps are .How telkom is still viable I have no idea .Worst experience of my life Telkom Mobile Greenstone Barry Ross Take a decision is possible for you