Rent to own ****

My husband rent a car deposit for R10000 and payment of R6000 for the month and had the car for 4months and then the car broke but it had miner problems like signals on the desk vaulty battery do not want to start and after awhile started we reported the issue but nothing came from that now the baterry is done and the senser is broken and they want to blame us for a suppositly new cars damages but had it only for 4months and spend almost R30000 for a broken car and now i the claim has been done on the car and they did not even wanted to give a kurticy car cause we not renting for 6months yet ..could have saved all that money up