The Worst

I was involved in a car accident on the 04th August. Insurance claim was approved and vehicle sent to a panel beater on the 14th of the same month. The very same panel beater Freeway Autobody already had a part quote at their disposal. A week later I was advised an engine harness was ordered from Korea as they could not source the part in South Africa. Over two weeks ago I requested an ETA regarding delivery of this part since its been ordered. Today I get to be told that the car manufacturer itself doesn't have the vehicle part. How is this even normal, I drive a Korean car and a part cannot be sourced from KIA. This is an appalling service especially being told that turnaround times cannot be confirmed. How am I expected to plan for anything when all I get is "unfortunately there is no ETA". This is totally unacceptable and I will not settle for second grade treatment. Not at all. What am I expected to do in the interim?