Still - billing not corrected

Telkom made a billing mistake, on their side. My debit order goes off on the same date every month, but they still managed to suspend my line to non payment (but payment was made with debit order) system problem on their side with the debit order payment not reflecting on their side. Then I get charged for a re-connection fee not once but twice!!!! I complained and got a reference number and was promised the billing issue would be resolved, it is no 3 month later , and they still have not sorted the billing issues of the double re-connection fee that they billed twice on my account. Pathetic, Pathetic service!!!!!