Cell C "Content Services" !!!

Cell C *** - i have cancelled my contract 4 months ago and am still being charged every month!! I call the call center, i go into the Cell C store! I have received zero service or satisfaction! The legal department doesnt even answer my calls. The reason for me wanting to cancel was the fact that i was constantly being charged for Content Services!!!!!!!!!!!!!!! These are 3rd party which i neva subscribed to - they charge u and u charge me - u take off my account - i cannot even put a stop to it - its *******!!!!!!!!!!!!!! My sim card is also not in a phone its in a modem so how can i even subscribe?????? I want my money back !!!!