Pathetic service from Momentum SA

My vehicle was recently sent to a panel beater to have my front bumper repaired. After 1 week I decided to find out on the progress I was told that the alternative bumper/pirate bumper did not fit and that the panel beater was now waiting for the OEM part. My vehicle is still covered by the factory warranty so why would a pirate part even be considered for this repair. After the OEM bumper was approved and "all" repairs finalized I now find out that part of the accident damage that was identified was not repaired although an assessor did inspect the vehicle. After numerous mails I still have had absolutely no feedback and the call center cannot provide any proper response as I was told I need to send an e-mail mentioning the outstanding damage and yes this was done but still I have no response.