How do I get Telkom to activate a SIM?

I replaced a faulty SIM card more than 88 hours ago and it is still not activated. Tried the helpline- totally useless as they told me to go back to the store. Tried to call the Telkom Cavendish store for hours with no answer. Eventually contacted Cavendish Mall manager and they sent security to the store with a message to call me on Friday. They did call but problem not resolved! Tried calling again today and no answer. As mentioned it is impossible- ironically- to contact a telecoms store- no one answers the phone EVER. This is HIGH FARCE. Any suggestions? At my wits end AGAIN with Telkom. What is it with this company that it is so relentlessly grossly ***********? Years and years of this s*** from this company. Over twenty years I have easily literally wasted weeks dealing with incompetence on an unprecedented level. Activating a SIM is not exactly rocket science.