Poor Service and Terrible Attitude

I hired a car for my wife from Budget Rent a Car as our car had gone in for repairs on 23 January 2016. I extended the car and at 30 days they advised that I had to sign a new agreement as no extension can be made. I did this and all the time deposits and payments were going off my credit card. On Monday the car was supposed to returned to the Milnerton Branch. I went in to request an extension until today Thursday 10 March 2016. I did not have my credit card on me. The clerk I think his name is Chris advised that its no problem they have holding deposits and would take the monies from there. Last night at 10pm someone knocked loudly on my door and an investigator from Budget said he is here to pick the vehicle because I did not return it on Monday and that the vehicle is not paid for. He was very rude and refused to show us the documents etc. I then called SAPS who then spoke to the person and he left without the vehicle. I think this is totally unacceptable. The person said that Budget called me and there was no calls received. Plus he threatened to black list me so that I will not be able to hire a car again.