Telkom Mobile shocking service.

Logged a complaint on 3 Mar 2016 about my billing which was incorrect. I was debited 700+ rand on a contract of R149 & my next bill showed a bill of R400+ on the same contract. I reversed the payment and contacted the call centre. I was advised my query would be processed & I would be contacted within 48 - 72hrs. It has been 3 weeks and 5 calls from myself and still nobody from Telkom Mobile has contacted me back. My billing details are still incorrect and my account has been suspended due to their poor sevicIe , inability to follow up & general incompetence. So Telkom I hope u can contact me so as to resolve this as a matter of urgency.