Operator damaged vehicle - claim not your fault

On the morning of Saturday the 7th December one of your vehicles driven by one of your employees managed to reverse into my vehicle at Fourways Mall. My vehicle, although in the incorrect lane was stationary at the time of impact. My vehicle is equipped with rear sensors and a camera, hence why although my vehicle was in reverse, it was stationary. Your machine struck the rear right of my vehicle, damaging the bumper, fender and light. Your machine had visible damage on the LEFT HAND SIDE. I did not see any damage in the front. However due to poor visibility this may have been missed Your vehicle was reversing – during the impact, your vehicle KEPT MOVING. The Mirror had struck my vehicle, and appeared to have lifted with a panel on the machine whilst he kept swinging and scratching my vehicle. Your tone in your emails does not appear to be helpful nor willing to assist. I have 2 witnesses in my vehicle, whilst the only witness from outside was your operator. I can appreciate the Fact that you need to get statements and prove the events, however this must be done with haste as to not inconvenience myself who is now sitting with a damaged vehicle due to your operators negligence.

NOW - you tell me that due to the security gaurds statement, WHO DID NOT WITNESS THE INCIDENT and the statement of your operator, the two of which are clearly in cahoots with each other, you tell me you are not liable for the damage????

I cannot believe a company of your size are willing to do this. YOUR OWN NEGLIGENCE - has caused R20000 damages to my brand new vehicle and you think you can simply say 'not my fault'?