Europcar - Communication Breakdown

I have been involved in an accident in Oct 2017.

I have been appointed to a third party claims agent and a person at Claims office but I am struggling to get hold of them.

There was an accident behind my rented vehicle and as a consequence, one of the vehicles bummed into the back of my car. I have been told that the insurance companies of those two refuted each others claims or something and therefor I cannot receive any money back.

Could someone please phone me from Europcar as Noelene Chiba simply does not answer on any email or phone call.

Jahno ***