Service query unresolved !

I have had a query since September 2020 regarding a mistake a lady made at telkom Forrest hill Johannesburg , I am being debited each month, carrying the costs over and over each month. The lady phoned 16th of November and apologized for the the mistake but up to today there have not been any response again nor have the problem been resolved. When I started this query each and every person I talked to wants me to fly to Jhb to go to the office of Forrest hill to go and resolve my query!! How absurd!! I am very disappointed and dissatisfied! Telkom is National, surely someone can help!!!