Tshwane Rates and Taxes Unresolved

I'm trying for the last ten years to have my rates and taxes account corrected and reconcilliated. To date, there is 100k in accumulated interest on amounts incorrectly charged (I am paying my account monthly). My many attempts, both personally and through an attorney, have stalled because City of Tshwane always promises to 'look into the matter' and then nothing happens, I have files full of documents and emails from contact persons who have done nothing they promised. Trying to go through service centre channels is not working. If anyone can put me in contact with a municipal manager who is personally willing to assist I would be very grateful.