Vehicle not Booked Deposit, Excess Ins kept

I booked a vehicle on line for th period 11 April 2015 to 25 April 2015. On 9 April I received a confirmation e-mail. I phoned Woodford Exclusive Rentals in Cape Town and they had no such booking. On 10 April I again phoned and still no booking. I phoned Argus and spoke to David. He assured me the booking was made. On arrival in Cape Town on 11 April 2015 my booking had not been made. I had also queried the 100KM limit per day as I had asked for 200 Km. I phoned Argus and was told by a lady that she could do nothing for me and I would have to pay a \cancellation"penalty and I could only query this after the 25th April 2015. This I did wanting full payment of my deposit as well as the excess insurance. She also told me nobody gives 200km per day. I then got what I needed at Thrift and Woodford could not match their price. Their customer services dept sent e-mail stating they are investigating. I have sent numerous e mails but they have not got back to me yet. Be careful when using Argus Car Hire as even though you get a confirmation e-mail they do not do your booking"