Mopping with faeces water at the restaurant

Chicken Licken at corner Francis Baart and Sophie de Bruyn. On the 28 of February 2020 between 6:30-8pm. They mopped the floor using water that was smelling like human faeces. The whole shop was smelling very bad customers walked out and stopped eating, including me. When I asked the lady and the manager why are they letting such to happen. The lady who was mopping said the mop was dirty, while the manager said she thought it was a drain from outside. The worse part was that the while staff laughed and continued like nothing happened. PLEASE DO NOT BUY OR EAT THERE, you might eat food that is contaminated.