Ref *** no feedback now calls suspended

I contacted the call centre on 05 Aug with regards to amount billed against a contract that was not renewed. This same contract ( for a 3g Modem) that I haven't used for a while had data of R344 billed as well as an sms! I have NEVER exceeded my data usage in the 2 years I had the contract. In fact I always had lots left every month. Why tell customers to contact Mtn to renew a contract and when no contact is made the contract is renewed anyway!! That same contract after paying R199 for 24 months suddenly gets billed with over R500+ after the contract was not renewed in the first place. I am extremely angry! I have now been told I will get feedback after 2 weeks. Time to move to another service provider!!!! I called the call centre three times today the first two consultants assured me that they would reconnect my service within the hour. This did not happen. The third one \escalated"the call and said I would be contacted after two weeks. This is totally unacceptable!"""