Unfair loss of no claim bonus

My parked, unoccupied car was hit by a Bakkie. To speed up repairs I went through Outsurance instead of their insurers. Outsurance will happily claim the excess back from the guilty party but my no claim bonus will be affected!!! Why? Because they are 'paying out'. I drive carefully, I pay my premiums on time but should I claim because of someone else's bad driving, I'm penalized.