Upgrade Wi Fi Contract

I called the Cellc Contact Centre yesterday with regard to an amount payable for My Wi Fi contract. I was informed that the contract was expiring at the end of June therefore the amount was payable. I was told that I can upgrade which I did. My Wi Fi is still not working so I have lost many hours of work. I called again this morning and eventually was transferred to the Technical Department. I was told that the line is active . I tested my Wi Fi again it, wasnt. He advised me that they had activated the primary simcard which was not the card in the Wi Fi Rooter. He said I needed to do a sim swop. went to the Cellc Branch in Pinetown and the customer care agent told me that they had activated the incorrect sim card. I had after a couple of months had a sim swop which is the card in the Wi Fi Rooter. I called Cellc back and explained this to them with no joy. The lady just put down the phone. I have been a Cellc customer since the beginning and find this very unprofessional. I am now sitting without Wi Fi and cannot work. Will a senior person please call me urgently.