Bad service and customer service

My network has been down for almost 2 months. When i make a call it says network busy or just drops the call. No data connection also.Called the customer care and they advised they can not do anything about this i mist email complaints. I asked tbe call centre agent how am i to do this with no internet connection she says there are other alternatives like using someone else internet Called head office and the lady who answered was so rude and acted like i was her ex boyfriend telling me she can not assist. She does not even want to tell me where to call or who to contact. She cuts the call and refuses to answer afterwards and keeps cutting the call. Now im stuck with a network that does not work and still im paying 500 a month This is ridiculous