Never received airtime,but billed

My name is m.cynthia Nape ,I joined ota throungh my phone,using their subscribtion code, since 2012 I have never received any airtime I've been calling their call canter since and each cosultant told me the same reply ,that somebody will call me ,but no one ever calls,I have even went back to jet to query using their store phone,and always get a reference number but the second time I call its like that reference is just a front. Fooling me to not call again,I'm warning everyone that this ota service is a **** they are not open they don't have any senior staff to handle customer queries, I have spoken to a consultant by the name of tshepo about cancelling my subcribtion he said to me he has sent a query but,still today I'm being. Billed R30.00 from my jet account and no one cares that I don't receive that airtime on my cell phone,but this email is my last attemt to getting through to them ,if this doesn't work .I am sure there is a Judge or a court for such misleeding services.I just want all the money refunded to my account ,and for that subscribtion to be cancelled.