Woodford car hire - Damage process lacking

We rented a car in Cape Town early Jan 2020, The service, car and rate was good. Unfortunately what came after was not that great. There was a small scuff mark on the fender of the car about the size of a R2-R5 coin, I acknowledge the damage expecting to hear what would happen. My deposit was returned making me believe as all was good and damaged would be buffed out. But 2 weeks later R3200 was deducted from my Credit Card without any notice, proof of damage costs, proof of repair or even the common decency to advise me to budget for the amount. After a few emails up and down I received a R500 voucher for future rental, but still no proof of damage costs, or that repairs were even done. They also did not respond to the fact the the vehicle we were given was not Licensed for the full rental period.