Worst Service Ever from Discovery Insure

I'm not happy with the level of service from Discovery Insure. I submitted a claim on the 17th of April 2018 for the bump on our Caravan. On the 3rd of May 2018 I submitted a quote as requested by Discovery to fix our Caravan. Discovery did not accept our quote and sent out their own guy to our house, to do their own assessment. They then declined our quote we got, and said they will only pay out the amount approved by their assessor. My question still remains who will fix it at the price Discovery so quickly decided on, as this was R2000 less than the quote we received, and apparently the assessor does not fix caravan's as he will not be doing the fixing? And Discovery does not answer me who will fix my caravan at my premises? Is been more than 2 months and they cannot get back to me...