Poor service & poor customer satisfaction

I got an sms about cheap airtime from Jet & that was when I spend R63 on a new contract simcard but then my 'BIS' was not activated & when I phoned them on the 11th April 2014 they said I will get a call to fix it but no one has ever call even when I phoned again on the 13th April I was told the same story but no one has called. I have explained it to rmca personnel abt how inconviniencing this is because I am mostly on the road so I depend on my phone for internet. On the 15th I called rmcs agai asking them to cancel my contract because I regret having any relationship with them as they are unproffersional and yet I was told to wait for a call from another department within rmcs and yet I have not received any call.