Miway just can't get it right

I have just about reached my limit with MiWay. After my recent rant on Hellopeter I received a call after minutes of posting the complaint. In a matter of hours my claim was resolved, panel beaters booked and hired car booked. HOWEVER..... My insurance sent me to a specific panel beater to get my car assessed, and this panel beater sent a quotation based on this assessment. I chose to go to this panel beater as it was convenient and situated close to my work premises. As I get to this panel beater they tell me there is no authorisation for my vehicle, so I call the same lady that phoned me to inform me my vehicle was booked and they have received authorisation, just to realise that it is not even the same panel beater that I took my vehicle to for the assessment. So MiWay sent me to the first panel beater, but then goes and approves my repair at a completely different panel beater that hasn't even seen or assessed my car!!!! How do you change panel beaters without informing me and expect me to trust this panel beater that can accept a job for a vehicle they know they never assessed? So again, another morning and fuel wasted for nothing.