Nissan rips off Datsun Go buyers with 15000 servic

We bought two Nissan - Datsun Go's - In February 2015. We asked the Dealer NTT Nissan Potch when the first Service is due and the salesperson told us on 15 000km's. When we inquired approximately how much a service will cost - the answer was in a range off R900 plus vat. But not more than R1200. So we signed and we where happy. Now the one Datsun Go needs a service and Ntt Nissan charges R1500. (only oil and oil filter and oil seal) Service alone per hour labor was R700) Not even a doctor charges you R700 an hour. So I phoned Star Nissan and the same was given to me - they change oil, oil filter and oil seal. R1500. When I inquired what was the charge rate for labor per hour R560 plus Vat= R638.40 then per hour. But seems Nissan made a fix rate of R1500 - because both these garages charges the same but they have a different labor per hour charge!!! No Nissan this is not acceptable - Poor Datsun Go clients are in for a shock of their lives and your sales agents makes promises of cheap service prices when selling cars. They are ripping clients off by making charges rates low - that is not true. If I know now what I now - I would not buy a Datsun Go - try and trade it R16000 less