Currency car hire

I made my claim on the 1st of April and I have been pushing and doing fill-up through emails as no one would call to update me, last week they called and said claim has been approved and requested a settlement letter from the bank which I sent and again it was quiet and my courtesy car hire was expiring; I then called them again telling them I need extension because they still have not finalised and I will be going away to the Eastern Cape for a week so I need a car and they extended by 4 days, again today I send emails requesting extension because there had been no response and I am still in Eastern cape needing this car instead they finally sent the settlement letter and then they said they cannot extend the car hire because my claim is finalised I must return the car tomorrow? How do I return the car while I am in Eastern Cape? And they said if I return here I will be charged as well, I have been inconvenienced throughout this claim while I miss no installment even on this month they deducted but they can't give me only 4 days of extension so I can get back to durban? Why is it all of a sudden impossible to assist me with the car hire that I pay for because now it suits you guys? I am very disappointed at this as the lady said the only way is if I take the extension on my account which is very unfair because I pay for insurance so that I don't get inconvenienced, right now I guess I cannot be assisted any further because the claim is finalised in their time.