Reject a factory warrant claim because service consultant failed to advise customer on the need to bring the vehicle in for repairs

I had my clutch replaced at Hyundai Springfield Park under the maintenance plan at 55199km i reported that the clutch was faulty again between 70 000km and 72 000km but was told by the consultant to bring the vehicle in at 75 000km service and they will look at it during the service. i booked the service when the mileage was at 74 959 but could only get a booking 4 days later as they were fully booked. It was serviced at 75 600 now because the vehicle was 400km over the 20 000km warranty period they would not replace the clutch. Ivan the service manager was the most useless and unco-operative service manager i have ever dealt with and was not prepared to motivate why it was over by 400km and because there is no voice recording from his service consultant Carmel telling me to bring my car in at 75 000km for them to look at the clutch he cannot assist me even though i can show my phone records indicating that i called the dealership. This is the worst experience i have ever had from a dealership. i will never recommend Hyundai to anyone not even my enemies if this is the kind of service that one gets no wonder they left the country before. i can see it happening again with the customer wrong, no assistance for the customer and definitely no customer service. I had to call the dealership the first 2 days to find out what was happening with my car no returned calls from Carmel. The worst experience ever and i hope that no-one else has to go through something like this.