HERTZ WORST EXPERIENCE EVER

On 3/5/2015 a black mail with a rented vehicle from Hertz drove into my still standing vehicle in a parking area. It was reported to the local police and I logged a claim with Valencia Seide from the Claims Department. There were 3 witnesses. The requested documents were submitted to her. It is almost two months later and nothing has been done to repair the damage to my vehicle. It is starting to rust. I contacted her several times. When I contacted her 3 weeks ago I was informed that their vehicle had a lot of damage and that I need to wait for the money to be recovered from the man that rented their vehicle. Numerous e-mails have been sent to her about the progress and the way forward. She does not even reply. My neighbour works for Avis and when a vehicle is returned with damage the customer needs to pay immediately for the excess. They debit the credit card immediately to recover the money. I think it is totally unfair the way I am being treated. Do you think it is fair? Surely a company like Hertz have insurance?