Mindless pass the buck

Mweb customer service really. Can someone not understand that I need to cancel the LTE service. I’m trying desperately to find someone who understands my plight but instead I get cut off not called back. And now have to end up paying additional R509 for downgrading and also no option to cancel. Can someone assist here. I pay R759 then to pay an additional R509 without an income do you think that’s gonna happen.