No one can help me

So on Saturday I loose signal, I have 3G but zero Cell C signal. I call Cell C (off another phone of course) and they have never heard of this, I can use 3G and data but no calls no sms, they ask me to do a hard reset, put on andoff we go through the setting enter some hacking type of codes and nothing. On Monday I go to Sandton City, I go to Autopage they say my account is soft locked? Huh? why or how? no one knows, I asked them to fix it they request something or other and tell me to restart my phone in an hour... I do that wait around, waste my time, after an hour no luck. I go to the Apple store they cant help me but the one employee outs his Vodacom sim in my phone and dials etc so all works then puts my Cell C sim in his phone and works... sms's calls everything... I tried this again last night to swap with another phone... so... its not my ohone and its not my SIM but the two don't seem to work together. what is the problem and why will no one help me? Also why should I honour and pay my contract when I cant use my free minutes or sms's and cant receive calls?????