Poor customer service (incomplete service)

Last week I went to take a contract phone for my daughter's birthday at MTN Rivonia, firstly the lady who was helping gave me wrong contract documents for another client and I explained that she gave me wrong documents and she seemed irritated but eventually gave me the contract documents reflecting my details and phone I was purchasing. I got home to realise that the contract sim was not activated or registered therefore phone couldn't be used, we tried to register it on the app, and we got a confirmation that they sim card is registered but the sim card is in fact still not working. I called the customer and they couldn't assist me with registering my sim for my daughter. It appears I will need to take another trip to MTN just to get this aspect resolved, disappointing :( .