Car Hire at Woodford

I have a terrible experience hiring a car with Woodford, I have been hiring cars from other car rental companies for years and I have never encountered such difficulties. Firstly the initial car I was offered had a lot off issues and they swapped the car for me after driving it to Ladysmith, however the car had dents on it when I received it which I noted & took pictures of and the driver mentioned that he noted them (no checksheet was completed) and the car was a quarter full whereas the faulty was filled up. The driver told me I'll have to sort it out with the branch where I will drop off the car. When I got there I was told this was supposed to have been filled by the driver, so now I'm getting 2 different processes. And in terms of the dents the guy who was checking in the car at the Hatfield branch, mentioned that these dents are shown on the system, I will need to complete an incident form of what happen explaining the situation. Explain the dents I have no idea of. There's an extra amount debited out of my credit card which I have no idea what it is for and I'm trying to contact the customer care line I'm not getting through. I have also received an email stating that there are damages noted on the car, an invoice will be sent after an assessment has been finalized. I don't even know what these damages are cause I have returned the car in the same state I received it.