Very pathetic service from NetAsses

My vehicle involved in an accident with another party who belonged to Discovery Insurance. To claim as a third party, Discovery advised me to take my vehicle for assesment at Net Asses. For starters the gentleman who assesed my vehicle on another assessors name. Because it was front damage I was advised that once my vehicle goes in for the repairs and more damages is discovered once the panelbeater has stripped the vehicle they would amend the quote pay the difference. The vehicle went in an the panelbeater requested another bumper or more money for labour to repair the old bumper. I ended up speaking to Keanu who transferred me a guy by the name Robie. Robie had an attitude from the word go. He point blank refused to authorise more labour for the panelbeater and also refused to pay for a replacement bumper. His words to me was "the panelbeater must only rub done and spray paint the bumper where the accident occured. He was rude, arrogant and insisted that they acted with in their rights and I should accept what he authorised otherwise he would authorise only half of what he already authorised. He refused to give his full details and said I can what I want he will not authorize anything extra.