Store does not register or RICA our new Sim card

On Monday I went instore to the Northridge mall branch to upgrade one contract and take out another. For the new contract I was given a Sim card and a device. Tuesday it did not work, we decided to give it time. On Wednesday I phone in, the Sim is not registered. The lady says she registered it, I have to wait 24 hours. Today it is still not working. We have now had it for 3 days. I phone I'm again, I get told the Sim card is not RICAd. How the he'll do your store employees let me leave the store without registering the Sim on the network or with RICA? I am very upset at this point. No one helps you, you just get referred to this or that department or told to go back in store. MTN has wasted so much of my time this week!