Woodford bad service from manager

Woodford car rental King Shaka, what a horrible experience I had at a very critical time. So I frequent Dbn and thought that I should give Woodford a try, I used their services on a Monday and again on Saturday, 1 day booking each. On Monday the service was excellent, I had no issues, except that the petrol tank of the car was not full, I informed the car inspector of this. I told him I cant be charged for someone's car fuel. We then went to the garage and filled the tank up, I then proceeded to take the car. I then returned the car with below 100km mileage and full tank only to be charged R183, which I saw on Saturday morning when I returned to utilize Woodford's services again. I ask the so called manager may he please check why I was charged, he says it was for fuel, I told him that there is no way you can charge me for fuel when I returned the car with a full tank, he said they will investigate. I then give him my debit card and he said unfortunately they wont be able to help me. Then I proceed to tell him but this is the exact same card that I was assisted with on Monday and there were no problems, I would have appreciated it if I had been informed from the beginning because other car hires do take debit. I am there at 07:30 and have a meeting at 08:00, he literally did not care, told me he is going to reprimand the lady who assisted me on Monday, cancelled my booking, told his colleague that I want to pay with a debit and proceeded to laugh and says that I am wasting time there is nothing he can do. Thank goodness for 1first who cam to my rescue and lifted up my spirits. I am still waiting for my deposit that I sent for the 1st service. I am still waiting on the reversal of my cancelled booking. I am still waiting on why I was charged for fuel on a full tank. I have given up trying to call the central office because I am always "number one" on the waiting list but my call never gets to an agent. Don't let the low deposit fool you. It is indeed too good to be true. they have even privatized their twitter account because of all the complaints.