Unauthorized Debit Orders from Telkom

Good day. is been about 4 months have unauthorized debit orders with a Telkom reference and i lso logged a complain to Telkom at wonderpark mall following the advice from my bank. This Uauthorized Debit Orders vary from R100,R150, R1000, R2000, R2500, 4000 and the highest was R4500 whcih from September they have been debit Standard bank account on the follwoing dates 15th, 20, 26 and sometimes the 1st. These has caused me financial strains and have even caused me my leave days and have to also incur transport costs. i have not recive any feed bakc form Telkmo i went to the branch at Wonderpark Mall and they took my number and promised me automatic call back and they haven't to this date. i have to change to another bank month but i cant close my standard bank account because is overdrawn and these overdrawn account is caused by this unauthorized debit order and backed-dated unreversed or unpaid fees that the bank take time to addressed as they need a written prove from Telkom that i dont have a contact with them whatsoever. some of the Debit orders reference area s follows : TELKOM ********** 95V 181025, TELKOM ********** 95P 181015, TELKOM TELK ********** 95C180928, TELKOM TELK ********** 95G180925. you assistance will be highly appreciated. Thank you