City of Cape Town's service literally stinks

I live in Vredekloof, and received an immense increase in valuation and resulting taxed. Yet the City of Cape Town cannot solve my problem. I have had 6 instances of sewage flooding my back yard in this year alone. It is so incredibly stink, and a health hazard for my child, pets and myself. Everytime they come and sprinkle something and everytime is ''solves'' the issue for about a week. I have had 4 incidents of flooding in April 2019 alone! I am at the point where I now need to move, but who will buy this house! It seems as if the City of Cape Town promises but fails to deliver. How is it impossible to solve this and how can they tolerate paying citizen to live in these conditions!