LOUSY CAR HIRE

I HIRED A CAR IN CAPE TOWN ON THE 2/11/18/ . SOMEONE BANGED INTO THE CAR GOING BACK TO CAPE TOWN ON THE 3RD. IT WAS NOT MY FAULT. I REPORTED TO THE POLICE. THE PERSON CONCERNED HAD NO INSURANCE ETC. I REPORTED IT TO THE CAR HIRE ON RETURNING THE CAR. THEY HAVE KEPT THE DEPOSIT OF 4000 SINCE THEN AND HAVE NEVER GOT BACK TO ME. I TRY TO GET HOLD OF THEM BUT CANNOT. APART FROM THE FACT THAT THEY ARE RENTING OUT LOUSY VEHICLES (DATSUN GO IS A TIN CAN ) THEY ARE COMPLETELY IGNORING ME. I NEED SOMEONE TO CONTACT ME.