they have no legal right to take it to there recommended repairer as you stated in your above post....there assesor will come to your panel shop to have a look at it and filter the independant assessors quote....but thats all, he may ask.....but your no obligated to let him move it.....i deal with these people everyday,i know how it works.If they try play hardball tell them your going to a third party recovery agent and watch them give in.......And if your letting them walk all over you with your datsun your not playing the game properly....and i assure you RACV is by far the worst,they will lie to you on many occasions to stall payment and try and offer you well under what the vehicle is worth