Bad service

Vehicle BZ74DX GP was taken to Toyota about a complaint that theirs a ratting noise and a whistling noise on the 25/08/2015 at 07:30. At 13:45 I drive past Toyata and see that the vehicle is parked out side. When I go in they inform me that the noise is coming from the tyres on the road. I told then its impossible I know the sound tyres make on the road surface. My first question is why take 6 hours to tell me that. On 02/09/2015 I take it back to Toyota where they I where inform that its the seals on the transfer case which is making the noise and was giving a quotation no *** of R4220,67 and was told before the parts can be ordered the full amount must be paid. The price of the parts are only R580,62 of the quotation the rest labour. Why must the labour be paid in advance. The full payment was made on 09/09/2015. Only on the 15/09/2015 the parts was available and the vehicle was only booked in on the 22/09/2015. At 15:27 I get a call from Cibsile to tell me the vehicle will not be ready today. After I asked her how long will it take and got confirmation it will be only one day. The vehicle was at Toyota at 07:30 on 22/09/2015.