Will not refund my deposit

I rented a car through Discovery Health. Collected the vehicle on 9/2/17 and there was no employee present to inspect the car with me before I took it (despite me looking for one for over 15min). On return of the car on the 11/2/17 the vehicle was inspected the vehicle was cleared of damages.

A day and half later I was SMS'ed to state the vehicle was damaged. I phoned Sipho from OR Tambo Branch and explaned the above (car was not pre-inspected and past inspection was 100% satisfactory) however he did not do anything about the matter and simply proceeded to charge me full excess. I contacted the claimed department on 15/2/17 and they said they will investigate the matter and I have still not had anyone contact me about the matter. On Thursday 15/2/17, Sipho emailed me and tried to get me to sign a BACK-DATED declaration of damages - which I would not sign. The company has still however not refunded me my deposit or issued me with an invoice.

The service from Europcar is disgusting and if anyone reads this, PLEASE do not use this rental agency!