No network

For the past 2 months we have no reception from Telkom.. this is most upsetting because we have a contract with Telkom but for a good two months we have not been able to use the network yet they continue to deduct money every month . We went to one of their branches in Festival mall ,Kempton Park but their staff could not help us, the service was slow and I could tell from the "Eish" that one of their employees gave us that they did not know how to help us. I'd like to know what the way forward is because Telkom continues to take our money but there is no service. How's that fair? How is that not a breach of agreement in our contract?