Terrible Customer Service

I would like to express my dissatisfaction after bringing my car for service in Eastvaal Secunda Kia where I ordered for brake light which I paid cash instantly and an agent called me to make and confirm a booking for 17.12.2024 which today (17.12.2024) when my wife arrived at the dealership with the car they made her wait 1 hour before telling her to go back because the person that made the booking was not there and they needed to investigate further. How can a professional dealership not fulfil their obligation because someone is on leave, how ridiculous is this and unprofessional.