Bad customer service

I was involved in a car accident on 2018-07-06,whereby my insurance gave permission to a certified panelbeater as my vehicle is still under warranty, to fix my Hyundai IX35.As the panelbeater still awaits for parts that was ordered but not received,there was again on 2018-08-15 a email from Hyundai that the specific part is having a back lock of 21 days.I was not happy about the delay and phone on the same day Hyundai customer service and spoke to Lydia Bekker.As i tried te explain my frustration,she didn't give me a chance to finish.She interupted me on several occasions and said that the specific panelbeaters is not registered by Hyundai.As i tried to explain that the insurance chise this designated panelbeaters,she inetrrupt me again and said i have to sort it out with the insurance.I took the matter up with the said panelbeater.This lady was rude and have no customer service at all.I will never buy a Hyundai vehicle again.