Disgusting service from Wesbank

I am highly disappointed with the lack of service from Wesbank or it's lawyers handling the Third party claims. My car was involved in an accident, on the 4th of October, and I had to put in a 3rd party claim with Wesbank. Until this date, this claim hasn't been finalized, and we have not been kept in the loop with the progress of this claim. The only response we have been getting from its lawyers, is that the file is with Management for Authorization. What makes the matter even worse, is that we are aware that they have been contacting the service providers, whose quotations we have submitted, asking them to reduce the quotations/ the price, by using second hand parts and not brand new parts. I was really not expecting this service from Wesbank, and I am even at a point where I would like to involve my lawyers, because my business is unable to generate an income due to this delay.