Sim Swap

I have 4 sim cards now. Called Cell C last night to do sim swap and I was told I can't use that sim as it's already activated and I should go and buy an unregistered sim. <br> <br> This morning I went to Cell C Sandton and I was told they only have registered sim cards I should go to Checkers which I did. Went to Checkers asked if the sim was registered I was told the sims are not registered. Called the contact center and guess what the sim was registered as per the guy I spoke to. Got another sim call the call center and this lady said the was registered. <br> Now I have 4 sim cards and still couldn't do a sim swap. <br> <br>