Terrible Service

I'm really disappointed. I have no idea why companies always mistreat clients who are good to them and payment which is forever up to date.

My service advisor from Hyundai Bryanston told me I can bring my car for service at most 65000km meanwhile on the service book when I check, the next of service due was never written as to when I should bring back the car.

My service booking has been declined and I don't understand how is it my fault?? I have provided a screenshot of my service book as proof

I'm really really not happy. Please help me Peter, my car need this major service.