Budget Insurance scratch and dent utterly poor service.

My car is with the repairer, and he is waiting for payment before releasing my car, therefore I've been fighting with budget insurance to pay for my scratch and damage. I'm presently renting a car, which I must pay for, and I'm being given the runaround when it comes to getting the payment from budget as I have been asked for documentation of prior auto repairs. I have supp**** everything that has been required of me, including the the quote of current repairs. The person in charge of the claim Llewellyn Haffajee does not even notice the invoice I sent him through email, and instead sends me an email requesting an invoice. I'm not sure what to name this because my frustration level is at an all-time high due to not having my car and the fact that I've already paid for this month's scratch and dent payment whiles not even being helped.Is there anyone that can sort this out for me?