POOR POOR SERVICE

I get absolutely poor service from MTN. I use to be with nashua after they closed down my data account were sent to them. My subscribtion fees differ every month and no one can give me any answers at MTN. The call centre is useless you never get through to speak to a consultant I am going mad...I refused to pay my account last month as every month my my billing is going up and up and no one can tell me how or why. I want to cancel this contract. I use to pay R119 now my account is over R300 HOW????? it is a 2G data contract I never paid more then my subscription fee AND if I should use all my data I was capped.<br> <br> POORRR!!!!!!!!