DISGUSTING! Threatened to be blacklisted but can't even speak to anyone in this company!

As I had an insurance claim, my car rental was through Europcar. Pre-inspection was done accordingly and delivery taken and the vehicle was returned within the time allocated. I was contacted over a month ago to say i owe almost R5000 additional for the vehicle rental. About R1500 has been deducted from my cr card but I refuse for the full amount be taken off as I am being charged for something which is not my fault. I am being charged for damages to the car. The damages was there when taking delivery, and it was documented on the pre-inspection form. I am now being handed over to attorneys with threats of being blacklisted. I have contacted Europcar numerous time with but their line doesn't work so you cannot speak to anyone, nor do they reply to emails. I spoke to Edith Maphongwane once when I complained on an email to the attorneys. She advised she would request for the inspection form from the branch as it wasn't attached. This is over 3 weeks ago, oh and apparently they were having issues with their lines but it is now sorted. Bull****! I also spoke to Nicole Lotter who promised I would get a call back and she would escalate it herself and also give feedback to me, oh well that never happened! I had to pay legal fees so I don't get listed but I can't even speak to someone! Not even the lawyers firm answers their phones, continuously goes to VM and told to leave a msg. WHAT AM I EXPECTED TO DO!!! Pay for something that I didn't do, I am not been given the documents that I have requested. PATHETIC!!! I will never use Europcar again and I will pass this comment to everyone I know as this is what has happened to me. I need someone to contact me ASAP as this needs to be resolved. I also want the legal fees I have paid to be refunded to me, because how can I be handed over when no one has spoken to me prior to handing me over, nor have I been contacted back when asked for proof of this claim.