Very poor customer service...

I was totally frustrated this afternoon-10/08/2019, when I tried doing a sim swap for both my contract lines. I recently lost my phone with both sims in it and reported the incident on the 4th of Aug. I went to a Cell C outlet/store in Fourways Mall today, to be assisted but what I encountered was just inefficiency and lousy customer service. The consultant in the store told me that "if they were to do a sim swap for me in the store it'll cost me R145 per sim, however I can do the swapping telephonically with the Cell C customer centre for R50 per sim. I decided to call the Cell C Call Centre while in the Cell C outlet/store, then the call centre agent told me that since I'm on the contract with Cell C, the store consultant should be able to do a sim swap for me and not charge me the R145 per sim but R50, I then decided to hand my phone to the store consultant, then they(store consultant and the call centre agent) argued with no positive outcome, the store consultant handed my phone back to me, so that I can continue talking to the agent on the line. I then tried talking to the call centre agent to do my sim swap, however, he also at some point said I need to check the OTP number sent, which I struggled retrieving, he then said he cant help me. When I ask him to call me back so that I can look for the OTP number, he said he cant. Then I just left the store because of the inconvenience caused by Cell C, the store consultant didn't seem to care, he just continued chatting(WHATSAPP) on his phone. Please can you train your staff especially the ones interfacing with your clients, to ensure efficiency and effective services for your clients...