Rude and Poor service

So I got a router and SIM on Friday so I was advised to call customer care on Saturday to activate everything. Saturday I call and was advised the the son card is fine. I put the SIM on my phone and it says no registered network, so call today and speak to "Simphiwe" from technical support and I so I speak to Simphiwe and simply explain to him that I called and I was told to put my SIM card in and and it's fine there's nothing wrong with it but when I put it in there is still a problem because there is no network and then Simphiwe speaks to me in a condescending tone and says to me did you try putting it into a device no a router like a proper device to make sure that the SIM card is working and I'm like Simphiwe I just told you from the beginning that I put it into a device my cellphone that's how I'm able to see that there is no network on the SIM card and then Simphiwe makes a loud sigh at me. I was shocked I am so angry I am so angry it's not even funny I don't appreciate the tone in which Simphiwe spoke to me and I don't appreciate how he kept quiet after I told him that I need to speak to the supervisor and he just kept quiet I held onto the line for 30 minutes and there was no sound no nothing it was just quiet so I do not know what the problem with him. I'm dissapointed, I am a new contract holder and extremely dissapointed with cell C's support call centre agents