Not the type of service expected from Telkom

My account *** My request reference *** - FA ***) for Data Double Billing Unable to get a 3 months credit for double billing (R1107) for more than a year inspite of numerous discussions and mails. At one point they even asked me to send them a copy of my bank statement so they can process refund but nothing happened. To get to speak to the correct person to try and sort out the problem is an impossible task. After 3 or more discussions the call just gets dropped and you have to start all over.