horriable service

hello peter , henry Chelhango Cell:*** kindly receive my dissatisfaction about the service I received from Kia South African ,I bought KIA 2700 in 2020 vin number KNCSHX71LL***,this year 2021 I started to experience problems with it, and diff got bent and i lodge a claim with KIA Makhado dealership ,i was then told that KIA warranty has declined my claim because it was overloading of the truck, which i strongly disagree with them,because we do removal of beds. Which i regard those beds as light weight .and we never had a fine from traffic officers for overloading. please expose their shenanigans