Service sucks big time!!!

I was in store one day cause i had problems with my phone, went into store asking if they could help me i was so ticked off at that moment cause my phone just died while busy with a phonecall 'invalid simcard' they checked it out and told me i need a sim swop and had to pay R114 i told them no cause its way to much and why am i paying my contract?! While explaining another consultant pops out of no where reading my personal details while two consultants are already helping me listening to what i have to say to them! After that they told me i need a software update!? I got so furious and told them its fine they should leave everything cause they ridiculous! Went to customer care centre on the lower level gave me brilliant service and told me there's absolutely nothing wrong with my phone or sim, so tell me is cellc trying to take me for a joke just to get money out of me?! And are you training people to read other customers personal details while TWO consultants are already busy helping! Does your staff have nothing better to do or WHAT THE HELL!!! No manager was on duty to help i could only speak to him the next day only to find out i didn't have to pay for anything!