REALLY BAD SERVICE - BEING BILLED FOR EXTRAS CHARGES

I have been trying to reach telkom customer care line and have been hanging on for more than 30 minutes to speak to a conultant. I tried calling 5 times already and i still have not reached a consultant who i can speak to. Every month i have been charged the standard amount for my cellphone which is R300 now suddenly i have been charged for account subscription and once off chargesfor the amount of R438.75. This is madness where does this even come from and the fact that i am unable to get through to the call center is not helping as i need this to be resolved as soon as possible. The service level from telkom is very unproffessional and i cannot just take off work to go into a store.