KIA SERVICE PROVIDER IS NOT DOING A FAVOUR FOR KIA CLIENTS

I am so disappointed with KIA MOTORS @NELSPRUIT. I purchased a KIA K2700 Workhorse in 2020. Full warrant service was part of the deal and the service interval of the vehicle is 10 000 KM. My hevicle has just reached 20 000 KM. I took it to KIA Motors in Nelspruit for Service and I was told the Service Provider who servive cars for KIA has declined to service my Vehicle. I could not get a conviencing explanation and took my vehicle back home without having beein serviced.