***** case opened 4 months ago with Telkom

I received a debit order 3 months ago from Telkom Mobile ,i contacted Telkom wanted to know why their deducting money from account, they said its not them nudebt management ,i also contact them they said its not them its Telkom , I open a ***** case with telkom Case no ***8 ,I gave them document they requested ,ID,Affidavit,proof of residence , but still i still receive debt orders for this. My get charged R138 for this transaction in a month they can debt 3 times , different amounts , they started with R886 , R1302, R1500 , R2302 ,this debt order amount can go in anytime of a day. So i am charge for this , I have never been to Telkom Mobile for a contract or authorize , or receive anything from them. Its been stressing me for months now ,no help ,or useful feedback for 4 months now, who going to pay my bank charges ?