Shocking an unacceptible service

Car checked in at Tommy Martins Roodepoort for routine service & a request to check dashboard lights on the 12/06/16 & was booked under the service advisor JP Malcolm. Shocking service I've received from this man and this dealership. 1) Upon booking I received no sms confirmation of date and time, nor an sms to confirm car has been booked in on the day of the service with the name of the service advisor. 2) 14:00 after the car was checked in the same morning, I hadn't had any call from anybody at the dealer to either acknowledge having booked in the car or for the quote. 3) I called in and was promised a callback in a few. 4) 1 hr 20 min later I get a call from \JP\", who wasn't even apologetic on the ********** service I've recevied. 5) He initially claims the total service is +/- R 8 500, for an oil change, spark plugs and a few other minors things, including a changing of a \"V -belt\". Upon be questioning, he suddenly changes his original amount to R 5 600 claiming a calculation error. 6) My request for checking of the dashboard lights & aircon wasn't resolved. 7)JP promised to call me back but never did. Most shocking, ********* business dealings, out for a quick buck. Disgusted!"