Anacepptable service from Outsurance

My wife was involved in a accident with her car . A vehicle with diplomatic numberplates hit her car and did not stop . Outsurance sent us to a assessor for a quotation .The assessor did not check ubnder the car although it was clearly hit on the left front wheel . Then we were sent to a different panelbeater for repairs . They repaired the mag rim ( wheel ) and informed us that there is more damage to the steering rack . The insurance refuse to repair the damage with the result that the car cannot be driven as it is not safe to do so . They claim it is wear and tear , this car only have 145 kilometres on the speedometer . The steering did not have any faults before the accident .Outsurance keep on giving me a new reference number and/or liason person .Then I do not hear from them again . I would not recommend this insurance to anybody .