Poor service

I took my Bakkie Chevrolet 1.14 2017 model ,since buying the car as second hand ,first time when I took in when it was 6500km I did asked the for Cable belt when they gonna change they told me when I reach 75000Km and same question when I asked they gave me same answer,my 3th service on 95000km still they never change it ,now I have a problem I spoke with service manager which I was told by him he still have to check record,how on earth you want a client to teach your employer how to do their job ,all I want is for them to fix the mess thy did and I we look for another dealer to service my car .it's Thier mess they need to sort it out ASP .last time when I took my car for service till to date it's more than 5 months still waiting for the break pads they don't call or up date ,when I call it was a new story every time,their services is very poor.