Lack of feedback on claim, no response to emails

I logged a claim with King Price on the 22nd of May and the lack of feedback is frustrating, even after I have sent them several emails and called in several times there is still no way forward regarding my claim. My vehicle was taken to a company called Mastercraft in Durban which is not an authorized VW repairer, someone from Mastercraft called me to arrange for me to bring in the vehicle after the claim was approved but I raised my concern with King Price as I was not comfortable with taking a vehicle that is still under warranty for repairs to a place that is not authorized to do repairs on the vehicle by the vehicle's manufacturer (Volkswagen). Since I raised that concern there has been no feedback from King Price, I have called and been told I will receive a phone call which has not happened, I have sent several emails even to their complaints department but there has been no response. This is causing a lot of frustration for me as I am not sure when and by who the vehicle will be fixed as King Price is giving me the silent treatment, and I can only imagine the inconvenience if the vehicle was not drivable. I have been a King Price customer since August 2013 and when it comes to claims they lack professionalism.