Bad Service, Worst car rental company ever!

I honestly can say that with this company its not about the customer, its about their credit card and how much they can get out of you. First of all there are so many flaws in their contract because there is just so many hidden agendas that is never mentioned to you when you sign. We collected a car in the rain and picked up a scratch on the passenger side of the door that was never marked on their assessor form. Proof that their paperwork is NOT flawless at all! We returned the car and was accused of a bump/scratch underneath the car.. basically on the undercarriage. They show photos taken on a camera of no bump as we leave and then a photo with a circle on where the bump is supposed to be. Needless to say you have to get on all fours to see where this damage is. Their photos are so pixelated that there is no way you can see any difference! We were charged an excess of R8000. We were never contacted to inform of us of any charge or insurance claim. We get an email 10 days later showing ONE accepted insurance claim with the amount we are being charged, which includes their assessor and claims fees. Is this fair treatment?? By no means is this fair treatment to anyone. I feel like I am just a number with this company and they just abuse my credit card without any authorization from me! I am taking legal action as I do not settle for unfair treatment and the most ridiculous service ever! I work in the service industry and I would NEVER treat my clients the way this company treats their clients.