Nedbank bad service and negligency

Since 24 March 2023 i have been struggling with the same complaint i logged that day, Nedbank wait for me to contact them on feedback, they send contractors that come to my house after working hours and always ask for excess fee, my initial complaint was a water leak and smart geyser device but due their neglincy my walls are damaged, tiles broken and kitched cupboards damage and placed in my living room. Until today no assistance rendered to me, my son even got burnt by boiled water because we have no kitchen cupboards in the kitche we do everything on the floor, my water bill due to the leak is neglected by them, electrical bill and my airtime gets finished trying to seek their help. I am monthly paying their premiums but their service is bad. All they tell me when i get hold of them is that my case is being investigated ***.