Complaint Renault Gateway over priced services

Renault Gateway over priced for major service of oil filter, Pollen filter, spark plug, oil drain, light wedge, consumables, magnate parts amounted to R 1866.23 including vat acceptable but LABOUR COST R2616. 30 including vat which is highly priced as year 2013 major service more was done and total invoice came to R2003.12! I queried with Mr Trevor Munsamy and he told pensioners discount given and Inflation! How can Pensioners discount given as no verification asked from driver and vehicle belong to me? Asked how is it possible for total labour cost inflation up by 237% and Total cost by 223% from year 2013 to 2015 as it unacceptable Inflation! I also queried delivery cost when purchased my vehicle adds up to R3500 what it is about as I picked my vehicle up with horrible service given that Day! He is offering me R247 refund and 10% of next service to silence Me and not answer my questions about disclosure on Invoice! Over priced and pathetic attitude of employees covering up for poor services. Dealer Principal handled matter very poorly and I'm disgusted about cover ups and hidden agendas and nobody to assist from Renault to Bidvest call center then only email response pathetic!