SIM SWAP

I have a contract with cell c and i lost my data SIM.Called the call centre on 29/8 reference *** and they advised that i get an unregistered SIM which i did (as difficult as it was)called back on Sunday (01/09 reference *** and i advised the consultant that i want to do a sim swap on my DATA SIM CONTRACT ,she assisted and advised that i use my sim after 4 hours ,to my surprise when i inserted my sim i realised that they did a SIM SWAP on an incorrect number.i then called the call centre reference *** and i was advised that i must go to the nearest branch so that i can be assisted at no charge since they have already charged me r50 for the SIM SWAP .I went to the President Hyper branch on Tuesday explained my situation to Swazi who called the call centre, spoke to Nolwazi reference *** who advised that they wont be able to assist i must buy another sim card and the branch will assist with the SIM SWAP at no charge. I explained to her that i have already spend money on the SIM card and a mistake was on their part,she didn't show any empathy with my situation she stood her ground (what happened to customer service) i have been PAYING my contract on time and when i need help from CELLC they telling me about their process i'm currently without DATA that i paid for on the 20th which is not my fault as i had done what they had asked and got an unregistered SIM.