3rd Party Claims Unreachable, no communication, no updates

Dealing with Momentum Insure's 3rd party/legal claims department is almost impossible. The consultant working on this claim is never available telephonically, and even when leaving a message with your message centre, I never receive a response. Email correspondence is ignored and never responded to. Its been nearly 2 months since my father in law's vehicle was rendered unusable due to your clients's negligence. Its a total loss for him, yet Momentum continues to drag their heals in this matter. We have submitted all required documentation, are able to produce a witness to the incident, yet it seems like Momentum are doing all they can to dismiss this claim just by their complete silence and unwillingness to communicate.