Telkom cannot do something as simple as a sim swop

Ive recently done an exchange of ownership on a cellphone contract at the pavilion (Durban) The contract was therefore due for an upgrade so I went ahead and done the upgrade on the 17/12/2015 we were told everything went through got home and had no service on the phone on the 18th we went back to the store they said there was something wrong with their system everything went through we must wait 2 to 6hrs we waited still no network received we went back to the store on the 21st handed the phone over and requested the phone to be sorted or cancel the contract the store assistant said the systems at fault she logged a case: ***3 and said it takes up to 3days today is the 28th and still dont have a clue if these people know what they are doing. We tried calling the store on numerous times and the phone just rings continuously