Telkom *****ing money because they feel they can

I requested change of banking details but the consultant over the phone never changed it when debit order was rejected because they deducted the old account I paid in the money took a leave day from work in order to go into a store and change my banking details it was finally done but THEN I WAS CHARGED DEBIT ORDER REJECTION FEE I LOGGED CASES MORE THEN 9 OPEN CASES EVERY CALL TO 081180 LEADS TO THEM ESCALANTING OR LOGGING A NEW CASE TWO MONTHS LATER NO RESPONSE THE LATEST CASE WERE CLOSED WITHOUT ANY FEEDBACK NOR ANY CREDIT THERE'S PROOF OF ME REQUESTING CHANGE OF BANKING DETAILS AS THAT CASE STILL EVEN OPEN EACH CALL THE ESCALATION TIME IS 72 WORKING HOURS WHICH WHEN THEY SAY IN WORKING DAYS MEANS 14DAYS EXCLUDING WEEKENDS AND PUBLIC HOLIDAYS